Merge pull request #1200 from switchhax/master

Added 3 new srcs for problems etc

problem-sets-competitive-programming.md

@@ -10,12 +10,14 @@
 * [Codeeval](https://www.codeeval.com/)
 * [Codeforces](http://codeforces.com/)
 * [Coderbyte](http://coderbyte.com/)
+* [Codewars](https://www.codewars.com/)
 * [Codingame](http://www.codingame.com/start)
 * [Facebook Hackercup](https://www.facebook.com/hackercup)
 * [Hackerrank](https://www.hackerrank.com/)
 * [Hello World Open](https://helloworldopen.com/)
 * [Internet Problem Solving Contest](http://ipsc.ksp.sk/)
 * [Just another Golf Coding](http://jagc.org/)
+* [Microcorruption](https://microcorruption.com/)
 * [Topcoder](https://www.topcoder.com/)
 
 
@@ -31,6 +33,7 @@
 * [PKU Online Judge](http://poj.org/)
 * [Ponder This!](http://domino.research.ibm.com/Comm/wwwr_ponder.nsf/pages/index.html)
 * [Project Euler](https://projecteuler.net/)
+* [Python Practice Projects](http://pythonpracticeprojects.com/)
 * [Sphere Online Judge](http://www.spoj.com/)
 * [TalentBuddy](http://www.talentbuddy.co/)
 * [Timus Online Judge](http://acm.timus.ru/)