Move code to named package
Remove managedSourceDirectories modification

This fixes adding correct source directories to Idea project files with
sbt-idea plugin version 1.4.0+. 

Plugin authors should not modify 'managedSourceDirectories' directly, 
but only provide 'sourceGenerator' which generates sources under a 
subdirectory of 'sourceManaged' setting of the scope as described here:
http://www.scala-sbt.org/0.12.3/docs/Howto/generatefiles.html
Merge pull request #148 from mpeltonen/topic/named_package

Move code to named package
Revert "Move code to named package"

This reverts commit 9994f4628718ed5ee55bf9607b94186252441bbb.
Set package to org.scalasbt.androidplugin
Specify snapshot version with timestamp
Update README.md
Merge pull request #170 from mpeltonen/topic/generated_sources_path

Remove managedSourceDirectories modification