Added two books on PicoLisp
Update free-programming-books.md

Added Parrot/Perl 6 > Perl 6 Programming @ Wikibooks.org
Adding tryF#
Merge pull request #674 from Andrea/patch-1

Adding tryF#
Merge pull request #673 from DavMorr/patch-1

Update free-programming-books.md
Merge pull request #672 from marios-zindilis/master

Added two books on PicoLisp
Fixed anchor to PicoLisp
Merge pull request #675 from marios-zindilis/master

Fixed anchor to PicoLisp
Added book "Agile Java" to "Java" section

"Agile Java" links to a series of PDF files for individual chapters of the book.
Merge pull request #676 from RNanoware/master

Added book "Agile Java" to "Java" section
Use proper case
Alphabetize jQuery
Fix D3.js
Fix Node.js
Add "Motivate me right!" book
Merge pull request #677 from Mouseion/patch-javascript

Various fixes for JavaScript list
Update free-programming-books-zh.md
Merge pull request #679 from simonmysun/patch-1

Update free-programming-books-zh.md Javascript 原理, by Belleve Invis
18000 Stars
little fix