finished float, added char, casting, random, algo
Merge pull request #1 from openframeworks/master

Pulling most recent version of ofBook master
Incorperated @brannondorsey's Edits

Improvements from the awesome suggestions by @brannondorsey
Update chapter.md
Update chapter.md
Merge pull request #29 from mikewesthad/master

Incorperated suggestions from ofBook editor @brannondorsey
Merge branch 'master' of github.com:openframeworks/ofBook