Integrate travis ci

Related to issue #4 
Travis CI test for odm_utils is now working. 
Edited .travis.yml file in order to install and provision CKAN, DB, Solr, etc...
Includes steps where RAW development.ini and jetty config files are being pulled from github (not optimal).
Testing takes about 2 minutes. A more light-weight method to initialise test environment would be preferred. Alternatives?