Add postinstall cleanup hook
Add postinstall cleanup hook

Cleanup useless build files and source code.

Reduces the size from 121mb to 7mb

dachev/node-cld,paulcbetts/node-cld,paulcbetts/node-cld,dachev/node-cld,chaosgame/node-cld,chaosgame/node-cld,dachev/node-cld,chaosgame/node-cld,paulcbetts/node-cld