Merge pull request #174 from Yonaba/master

Added Factorial in Lua
Tags for Sieve_of_Eratosthenes
Sieve with Ruby, tested with Rspec
Merge pull request #175 from mitogh/master

Tags for Sieve_of_Eratosthenes
Sieve with C
Remove compiled file
Fixing problem with compiled file
Merge pull request #176 from mitogh/master

Sieve with C
Added selection sort in Go
Added tests for selectionsort in GO
Added Shell Sort in Go
Added tests for Shell sort in Go
go fmt 'ed all go files in repo
Merge pull request #177 from jcla1/master

Added selection sort (with tests) & shell sort (with tests) in Go and `go fmt`ed all go files
Fixed comment
Added Sieve of Eratosthenes in Lua