Removed coveralls badge, added scrutinizer one.
Removed coveralls badge, added scrutinizer one.

nao-pon/flysystem,twistor/flysystem,mapyo/flysystem,CarsonF/flysystem,hannesvdvreken/flysystem,mhlavac/flysystem,dshafik/flysystem,sachintaware/flysystem,farmisen/flysystem,dstockto/flysystem,twistor/flysystem,sohelrana820/flysystem,oswaldderiemaecker/flysystem,Amrit01/flysystem,mhlavac/flysystem,rossriley/flysystem