Update select branch to GitLab look and explain why this guide is long so people are not discouraged.
Update select branch to GitLab look and explain why this guide is long so people are not discouraged.

8thcolor/rubyconfau2015-sadr,8thcolor/eurucamp2014-htdsadr,8thcolor/rubyconfau2015-sadr,8thcolor/rubyconfau2015-sadr,8thcolor/eurucamp2014-htdsadr,8thcolor/eurucamp2014-htdsadr