Create really_useful_fix.rb
Create another_feature.rb
Create really_useful_fix.rb
Merge pull request #11 from githubteacher/master

Githubteacher's contributions
Bring a new file to the repo.

Required by the Code School's verification system for the
Mastering Git class.
Bring more appropriate introduction together with an expected CodeSchool
class of my choosing.
Bring some new skills to the list as per level 2 section 1 challange
Added comment on rebase
Added new rule about coffee
Merge pull request #1 from wkoszek/deadly_skills

Bring some new skills to the list as per level 2 section 1 challange
Fix problems.
Merge pull request #2 from wkoszek/new_rules

Too many people are spilling coffee
Merge branch 'master' into release_branch_1.0