Updating javadoc on public repo

git checkout <branch you want javadoc for>
  	cd MobileBuy
	./gradlew javadoc
	mv buy/build/docs/ temp
	git checkout gh-pages
	git rm -r buy/build/docs
	mv temp buy/build/docs
	git add buy/build/docs/*
	git commit -m 'update javadoc'
	git push