Added "A Course in Machine Learning"
Merge pull request #454 from bbuyukguzel/master

Added "A Course in Machine Learning"
Add Arduino
Merge pull request #455 from hiseba/patch-1

Adding Arduino
Add a coffeescript book
Merge pull request #456 from sbagdat/patch-1

Add a coffeescript book
Some changes

- Removed "A Course in Machine Learning". There were 2 same links in the
list. One of them kept which is originally belong the author
- Added 1 Android and 2 Powershell books
Merge pull request #457 from bbuyukguzel/master

Some changes