updated gemspec to include template2 dir
updated gemspec to include template2 dir

wuqiangxjtu/scala-bootstrapper,hydro2k/scala-bootstrapper,hydro2k/scala-bootstrapper,wuqiangxjtu/scala-bootstrapper,chintootech/scala-bootstrapper,twitter/scala-bootstrapper,hydro2k/scala-bootstrapper,wuqiangxjtu/scala-bootstrapper,chintootech/scala-bootstrapper,twitter/scala-bootstrapper,chintootech/scala-bootstrapper