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