Merge pull request #3 from txiki31/master

fix(dependency) check Zip Class is present
feat(release) bootstrap 3.1
Merge pull request #4 from txiki31/3.1

feat(release) bootstrap 3.1
fix(installer) use /usr/bin/env php
Merge pull request #5 from txiki31/3.1

fix(installer) use /usr/bin/env php
version(version): Update to bootstrap 3.2.0
Merge pull request #6 from Eric-Brison/master

version(version): Update to bootstrap 3.2.0
fix(installer) set module name according to bootstrap version