Migrate to Travis container-based infrastructure.
Migrate to Travis container-based infrastructure.

Advantages are listed here:
http://docs.travis-ci.com/user/migrating-from-legacy

mafrosis/flask-security,mattupstate/flask-security,mafrosis/flask-security,simright/flask-security,fuhrysteve/flask-security,inveniosoftware/flask-security-fork,yingbo/flask-security,inveniosoftware/flask-security-fork,jonafato/flask-security,fuhrysteve/flask-security,fmerges/flask-security,themylogin/flask-security,LeonhardPrintz/flask-security-fork,mattupstate/flask-security,inveniosoftware/flask-security-fork,themylogin/flask-security,yingbo/flask-security,fmerges/flask-security,nfvs/flask-security,LeonhardPrintz/flask-security-fork,nfvs/flask-security,LeonhardPrintz/flask-security-fork,jonafato/flask-security,simright/flask-security