Fix typos and broken link

Minor typos
Fixed broken Brandon Rhodes link.
http://rhodesmill.org/brandon/2012/one-sentence-per-line/
Merge pull request #17 from RichardDooling/master

Fix typos and broken link
Merge branch 'master' of https://github.com/olivertaylor/Textplay

# By Rick Dooling
# Via Oliver Taylor (1) and Rick Dooling (1)
* 'master' of https://github.com/olivertaylor/Textplay:
  Fix typos and broken link