Merge pull request #90 from wangjiezhe/master

rpm v3.5.5-1.fc21 built
Install bcloud in ubuntu12.04
Add a new line break
Fixed: remove `install`; https://github.com/LiuLang/bcloud/issues/65
Add comment about gnome-keyring
v3.5.5-3 built for debian
v3.5.6-1 built for debian
rpm v3.5.6-1.fc21 built