[FEATURE] change version range of bower packages
[FEATURE] change version range of bower packages

only install with major version in bower file

closes #89

markusfalk/generator-kickstart,markusfalk/generator-kickstart,OpenSourceWorkflow/generator-kickstart,webit-de/generator-kickstart,webit-de/generator-kickstart,markusfalk/generator-kickstart,OpenSourceWorkflow/generator-kickstart,OpenSourceWorkflow/generator-kickstart