add rule for: yarn install [pkg]

--- `install` has been replaced with `add` to add new dependencies. Run $0 instead.

https://github.com/yarnpkg/yarn/blob/6e9a9a6596ca8f177f68f6672a1ef4ff16705336/src/reporters/lang/en.js#L18

thefuck/rules/yarn_command_replaced.py

@@ -0,0 +1,13 @@
+import re
+from thefuck.utils import for_app
+
+regex = re.compile(r'Run "(.*)" instead')
+
+
+@for_app('yarn', at_least=1)
+def match(command):
+    return regex.findall(command.stderr)
+
+
+def get_new_command(command):
+    return regex.findall(command.stderr)[0]