fix grammar
Merge pull request #15 from simoc/master

Sending a pull request
add simoc
Fix wrong English.
add new section
fix typo (Philipp)
add Philipp
another fix from Philipp
fix from philipp
Fix typo: this -> these
Merge pull request #17 from lupino3/master

Fix a small typo in chapter 3.
Add Spadaccini
wording change
Merge pull request #18 from tjyang/master

please review one line change in README.markdown
add more markdown syntax
add more markdown syntax
add more markdown syntax
add more markdown syntax
add more markdown syntax
add more markdown syntax