Merge pull request #344 from Yonaba/master

New algorithms
Added Harshad number in Python
Added Harshad Number in AWK
Merge pull request #345 from wasi0013/master

Added Python and AWK implementation of Harshad Number
Linear Search with Java Tested with junit
Merge pull request #346 from mitogh/master

Linear Search with Java Tested with junit
Added README for Ackermann
Ackermann's function with Ruby tested with Rspec
ackerman function with PHP tested with PHPUnit
Ackermann's function with Java tested with JUnit
Remove duplicate files
Merge pull request #347 from mitogh/master

Ackermann's function with Ruby tested with Rspec
Added Average in Python
Merge pull request #348 from wasi0013/master

Added Average in Python
added ackerman in haskell
Merge pull request #349 from NorfairKing/master

added ackerman in haskell
Added Simple Caesar Ciphering algorithm implementation
Merge pull request #350 from corpix/corpix/caesar-cipher

Added Simple Caesar Ciphering algorithm implementation
Added 2 ways to calculate catalan numbers.
another 2 ways for catalan numbers. way to verify all algos give the same solution