New post on introducting Scalaz
fixed typo in blog post
Update Scalaz and Spire versions

Scalaz: 7.0.3 -> 7.0.4
Spire: 0.5.0 -> 0.6.1
Scalaz 7 is now the default branch

[none]
fix 2 typos
Merge pull request #11 from adelbertc/towards-scalaz-pt1

New post on introducting Scalaz
move "Towards Scalaz" post to drafts
Small changes to Towards Scalaz Pt.1

s/Adder/Addable
Linked to Spire project/blog post