Add and Update about Standard ML (#2205)

* Add a Standard ML slides by Atsushi Ohori

* Update SML# Document to new version in Japanese

* Add Standard ML Document in English, copied from Japanese

* Fix alphabettical order

free-programming-books-ja.md

@@ -642,7 +642,8 @@
 ### Standard ML
 
 * [お気楽 Standard ML of New Jersey 入門](http://www.geocities.jp/m_hiroi/func/index.html#sml) - 広井誠
-* [プログラミング言語SML#解説](http://www.pllab.riec.tohoku.ac.jp/smlsharp/docs/1.0/ja/manual.xhtml) - 大堀淳, 上野 雄大
+* [プログラミング言語SML#解説](http://www.pllab.riec.tohoku.ac.jp/smlsharp/docs/3.0/ja/manual.xhtml) - 大堀淳, 上野 雄大
+* [プログラミング言語Standard ML入門](http://www.pllab.riec.tohoku.ac.jp/smlsharp/smlIntroSlidesJP.pdf) - 大堀淳 (PDF)
 
 
 ### Swift

free-programming-books.md

@@ -2134,8 +2134,10 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 
 ### Standard ML
 
+* [Introduction to Standard ML](http://www.pllab.riec.tohoku.ac.jp/smlsharp/smlIntroSlides.pdf) - Atsushi Ohori (PDF)
 * [Programming in Standard ML '97](http://homepages.inf.ed.ac.uk/stg/NOTES/) - Stephen Gilmore, University of Edinburgh
 * [Programming in Standard ML, DRAFT](http://www.cs.cmu.edu/~rwh/isml/book.pdf) - Robert Harper (PDF)
+* [SML# Document](http://www.pllab.riec.tohoku.ac.jp/smlsharp/docs/3.0/en/manual.xhtml) - Atsushi Ohori, Katsuhiro Ueno
 
 
 ### Subversion