removed use of pear in the travis.yml setup #194
tabs to spaces
reversed --prefer-source to --prefer-dist composer flag: this can speed up installs substantially on build servers
added php 5.6 to .travis.yml
moved phpunit/dbunit to require-dev section and added --no-interaction
Merge pull request #198 from cryptocompress/master

removed use of pear in the travis.yml setup #194