Modified Gemfile

* Updated rails to 4.1.4
* Added version range for all gems except which for development and test
Changed gem version to lock only major

* Changed from `~> x.y.z` to `~> x.y`
* Removed version range from sdoc and spring
* Added version range to omniauth-google-oauth2
fix adapter version
Merge pull request #88 from lodge/modify_gemfile_fix

アダプタのバージョン固定
fix fonts path for bootstrap/gryphicons
fix glyphicons path
Merge pull request #91 from lodge/modify_gemfile-bootstrap_versionup

Bootstrapのバージョンアップに伴うフォントを読み込めなくなる不具合への対応
Merge pull request #87 from lodge/modify_gemfile

Modified Gemfile