Increasing Memory in Intellij IDE 12

1.- Copy the file "/Applications/IntelliJ IDEA.app/bin/idea.vmoptions" to "~/Library/Preferences/IntelliJIdea12/idea.vmoptions"

2.- Edit file "~/Library/Preferences/IntelliJIdea12/idea.vmoptions"

3.- For example change -Xmx800m by -Xmx2048m

4.- Restart IntellijIDEA 12

This steps works fine on Android Studio