Fix a problem with Travis build, installing libpcre to avoid failing build for php56 (#1303)
Fix a problem with Travis build, installing libpcre to avoid failing build for php56 (#1303)


p365labs/Elastica,ARAMISAUTO/Elastica,miniplay/Elastica,stof/Elastica,ruflin/Elastica,ARAMISAUTO/Elastica,stof/Elastica,p365labs/Elastica,giovannialbero1992/Elastica,giovannialbero1992/Elastica,miniplay/Elastica