Recorect: before double the numbers, the list should be inversed first
Merge pull request #58 from stupidgrass/master

Recorrect the solution of Number/credit_card_validator and improve it
Update Readme.md
Merge pull request #59 from quitrk/master

Update Readme.md
update feed parser sriniavireddy
Merge pull request #60 from sriniavireddy/patch-2

update feed parser sriniavireddy
Merge pull request #2 from karan/master

request to merge