Tweak to class 6 exercises
Tweak to class 6 exercise 5
Improve class 1
Add class 7 exercises
Add ruby style guide for class 6
Tweak class 6 ruby style guide
Tweak class 6 ruby style guide
Tweak class 6 ruby style guide
Tweak class 5 and 6 ruby style guides
Tweak class 5 and 6 ruby style guides
Tweak class 5 and 6 ruby style guides
Tweak class 6 ruby style guide
Tweak class 6 ruby style guide
Tweak class 6 ruby style guide
Extract the ruby style guides (start)
Merge remote-tracking branch 'upstream/master'

Conflicts:
	class6/2_happy_birthday.rb
edits for 3
Edits for 5
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