Update free-programming-books-gr.md
add Coffeescript Style Guide
fix the inde
Added HTML/CSS and Swift courses
Updated link
added two new Perl resources in Chinese
Merge pull request #1135 from sunxb10/master

added two new Perl resources in Chinese
Added "Agile Android Software Development" eBook

Added "Agile Android Software Development" eBook in the list under the Android section.  The book is currently in writing progress, but new chapters are released as soon they are copy-edited.  "Release 1.0" is expected in January 2015.
Merge pull request #1136 from Symbiosoft/master

Added "Agile Android Software Development" eBook
added to index as requested
Merge pull request #1138 from borgified/patch-2

Patch 2
added "The Design and Implementation of the Anykernel and Rump Kernels"
Merge pull request #1140 from ligurio/master

added "The Design and Implementation of the Anykernel and Rump Kernels"
[ja] Added ruby for iOS book
sorting free courses
Merge pull request #1141 from luminousspice/ja

[ja] Added ruby for iOS book
Merge pull request #1142 from grogy/sorting-courses

sorting free courses
Updated add free-programming-books-tr.md [Add Html Tutorial]
Merge pull request #1143 from mehmetdik/master

Updated add free-programming-books-tr.md [Add Html Tutorial]
Updated free-programming-books-tr.md
Added Android tutorial