added composer.lock to .gitignore
added composer.lock to .gitignore

AlexanderC/share-my-earthquake,lmarttins/SmartRIS,marius-rizac/Silex-Skeleton,morozow/freedom1,silexphp/Silex-Skeleton,agusbussi03/elecciones,AlexanderC/share-my-earthquake,agusbussi03/elecciones,KaranSofat/Silex-Skeleton,Diego-Brocanelli/Silex-Skeleton,KaranSofat/Silex-Skeleton,cesarAugusto1994/report,cesarAugusto1994/blog3,laukatu/Silex-Skeleton,cesarAugusto1994/report,theias/ibportal,nbpalomino/Silex-Skeleton,cesarAugusto1994/blog3,cesarmarinhorj/Silex-Skeleton,cesarAugusto1994/report,theias/ibportal,laukatu/Silex-Skeleton,Wiredcraft/demo-php-and-angular-and-react,javal1983/silex-scrapbook,laukatu/Silex-Skeleton,lmarttins/SmartRIS,theias/ibportal,Diego-Brocanelli/Silex-Skeleton,lmarttins/SmartRIS,javal1983/silex-scrapbook,nbpalomino/Silex-Skeleton,drufony/druplex,Diego-Brocanelli/Silex-Skeleton,cesarmarinhorj/Silex-Skeleton,Wiredcraft/demo-php-and-angular-and-react,JoshuaEstes/xero-silex-app,Wiredcraft/demo-php-and-angular-and-react,cesarAugusto1994/blog3,marius-rizac/Silex-Skeleton,microstudi/Silex-Grunt-Skeleton,agusbussi03/elecciones,silexphp/Silex-Skeleton,adriavalles/Another-Silex-Skeleton,microstudi/Silex-Grunt-Skeleton,microstudi/Silex-Grunt-Skeleton,BibiFock/euler