Fixes
Remove extra word.
Merge pull request #65 from scelis/extra-word-swift-functions

Remove extra word from the Swift functions article
Edits 2
Correcting SICP author Harry's name to Hal
Update 2014-09-10-power-of-swift.md

Typo
Merge pull request #66 from andymatuschak/patch-1

Correcting SICP author Harry's name to Hal