updated: Github's new markdown feature

https://github.com/blog/1841-nested-task-lists

TODO.md

 TODO
 ===
 
-+ ☐ : Add new books
-+ ☑ : Wiki
-    + ☑ : How to Contribute
-    + ☑ : Link to License
-+ ☑ : Readme.md
-    + ☑ : Better symantics
-    + ☑ : Links to other Files
-    + ☑ : Description
-    + ☑ : Link to License
-+ ☐ : Getting the word out there.
-    + ☐ : Graphic Pack
-    + ☑ : Share links of tw,fb,gp,li,...
-+ ☐ : Alphabetizing the entries in the pages
-    + ☐ : bg
-    + ☐ : de
+- [ ] : Add new books
+- [x] : Wiki
+    - [x] : How to Contribute
+    - [x] : Link to License
+- [x] : Readme.md
+    - [x] : Better symantics
+    - [x] : Links to other Files
+    - [x] : Description
+    - [x] : Link to License
+- [ ] : Getting the word out there.
+    - [ ] : Graphic Pack
+    - [x] : Share links of tw,fb,gp,li,...
+- [ ] : Alphabetizing the entries in the pages
+    - [ ] : bg
+    - [ ] : de
     + ☑ : es
-    + ☐ : en
+    - [ ] : en
     + ☑ : fa_IR
-    + ☐ : fr
-    + ☐ : it
-    + ☐ : ja
-    + ☐ : ko
-    + ☐ : pt_BR
-    + ☐ : pt_PT
+    - [ ] : fr
+    - [ ] : it
+    - [ ] : ja
+    - [ ] : ko
+    - [ ] : pt_BR
+    - [ ] : pt_PT
     + ☑ : ru
-    + ☐ : tr
-    + ☐ : zh
-    + ☐ : javascript framework
-
-Map:  
-☑ : Done  
-☐ : In progress
\ No newline at end of file
+    - [ ] : tr
+    - [ ] : zh
+    - [ ] : javascript framework
+    - [ ] : courses