Updated README.md

Removed crafttweaker info. Will be moved to a wiki page when necessary
again.
Updated API part with the info about github packages and also moved it
higher.

README.md

@@ -12,10 +12,9 @@
 * [Downloads](#downloads)
 * [Installation](#installation)
 * [Issues](#issues)
+* [API](#applied-energistics-2-api)
 * [Building](#building)
 * [Contribution](#contribution)
-* [API](#applied-energistics-2-api)
-* [CraftTweaker](#applied-energistics-2-crafttweaker)
 * [Localization](#applied-energistics-2-localization)
 * [Credits](#credits)
 
@@ -67,6 +66,38 @@ Providing as many details as possible does help us to find and resolve the issue
 
 Please note that we might close any issue not matching these requirements. 
 
+## Applied Energistics 2 API
+
+The API for Applied Energistics 2. It is open source to discuss changes, improve documentation, and provide better add-on support in general.
+
+### Maven
+
+We use Github Packages as maven repository now. You can use the following snippet as example on how to add a repository to your gradle build file.
+
+    repositories {
+        maven {
+            name "AE2"
+            url "https://maven.pkg.github.com/AppliedEnergistics/Applied-Energistics-2"
+        }
+    }
+
+When compiling against the AE2 API you can use gradle dependencies, just add
+
+    dependencies {
+        compileOnly "appeng:appliedenergistics2:VERSION:api"
+    }
+
+or add the `compileOnly` line to your existing dependencies task to your build.gradle.
+
+Replace `VERSION` with the desired one. With 1.15+ we switched to using [semver](https://semver.org/). 
+It is highly recommended following its specification and further considering an upper bound for the dependency version.
+A change of the `MAJOR` version will be an API break and can lead to various crashes. Better to inform a player about the addon not supporting the new version until it could be tested or updated.
+
+An example string would be `appeng:appliedenergistics2:7.0.0-alpha.6:api` for the API only or `appeng:appliedenergistics2:7.0.0-alpha.6` for the whole mod.
+
+Builds obtained [here](https://github.com/AppliedEnergistics/Applied-Energistics-2/releases) or via [maven](https://github.com/AppliedEnergistics/Applied-Energistics-2/packages) should work in a development environment.
+However the dependency might need to be wrapped in `fg.deobf()` like `runtimeOnly fg.deobf("appeng:appliedenergistics2:VERSION:api")`
+
 ## Building
 
 1. Clone this repository via 
@@ -110,66 +141,6 @@ Here are a few things to keep in mind that will help get your PR approved.
 
 If you are only doing single file pull requests, GitHub supports using a quick way without the need of cloning your fork. Also read up about [synching](https://help.github.com/articles/syncing-a-fork) if you plan to contribute on regular basis.
 
-## Applied Energistics 2 API
-
-The API for Applied Energistics 2. It is open source to discuss changes, improve documentation, and provide better add-on support in general.
-
-Universal builds obtained [Here](http://ae2.ae-mod.info/Downloads/) should work in a development environment.
-
-### Maven
-
-When compiling against the AE2 API you can use gradle dependencies, just add
-
-    dependencies {
-        compile "appeng:appliedenergistics2:rv_-_____-__:api"
-    }
-
-or add the compile line to your existing dependencies task to your build.gradle
-
-Where the __ are filled in with the correct version criteria; AE2 is available from the default forge maven so no additional repositories are necessary.
-
-An example string would be `appeng:appliedenergistics2:rv5-stable-1:api` for the API only or `appeng:appliedenergistics2:rv5-stable-1`  for the whole mod.
-
-## Applied Energistics 2 CraftTweaker
-
-### Inscriber
-
-The inscriber uses the vanilla recipe system with a custom `type` of `appliedenergistics2:inscriber`.
-See the [inscriber recipe folder](src/main/resources/data/appliedenergistics2/recipes/inscriber) for some examples.
-
-### Grindstone
-
-The grindstone uses the vanilla recipe system with a custom `type` of `appliedenergistics2:grinder`.
-See the [grinder recipe folder](src/main/resources/data/appliedenergistics2/recipes/grinder) for some examples.
-
-### Spatial
-Whitelist a TileEntity class for Spatial IO.
-
-	mods.appliedenergistics2.Spatial.whitelistEntity( String fullEntityClassName );
-
-### Attunement
-Attune a ItemStack or ModID to a specific P2P-Tunnel type. ModID's are used as fallback when no ItemStack was found.
-
-	mods.appliedenergistics2.Attunement.attuneME( ItemStack itemStack );
-	mods.appliedenergistics2.Attunement.attuneME( String modID );
-	mods.appliedenergistics2.Attunement.attuneItem( ItemStack itemStack );
-	mods.appliedenergistics2.Attunement.attuneItem( String modID );
-	mods.appliedenergistics2.Attunement.attuneFluid( ItemStack itemStack );
-	mods.appliedenergistics2.Attunement.attuneFluid( String modID );
-	mods.appliedenergistics2.Attunement.attuneRedstone( ItemStack itemStack );
-	mods.appliedenergistics2.Attunement.attuneRedstone( String modID );
-	mods.appliedenergistics2.Attunement.attuneRF( ItemStack itemStack );
-	mods.appliedenergistics2.Attunement.attuneRF( String modID );
-	mods.appliedenergistics2.Attunement.attuneIC2( ItemStack itemStack );
-	mods.appliedenergistics2.Attunement.attuneIC2( String modID );
-	mods.appliedenergistics2.Attunement.attuneLight( ItemStack itemStack );
-	mods.appliedenergistics2.Attunement.attuneLight( String modID );
-
-### Cannon
-Add ammo types for the matter cannon.
-
-	mods.appliedenergistics2.Cannon.registerAmmo( ItemStack itemStack, double weight );
-
 ## Applied Energistics 2 Localization
 
 ### English Text