Added php 5.3 for travis
Added php 5.3 for travis

barryvdh/flysystem,nao-pon/flysystem,dragoonis/Flysystem,dstockto/flysystem,concrete5/flysystem,farmisen/flysystem,twistor/flysystem,mhlavac/flysystem,mapyo/flysystem,hannesvdvreken/flysystem,mhlavac/flysystem,sachintaware/flysystem,dshafik/flysystem,WyriHaximus/Flysystem,CarsonF/flysystem,sohelrana820/flysystem,rossriley/flysystem,oswaldderiemaecker/flysystem,Amrit01/flysystem,twistor/flysystem