add travis and coveralls integration

make tests compatible with php 5.3

remove hhvm from travis

add coveralls integration

use old array syntax for php 5.3 support

add php 5.3 to the allowed failures for now

add build and coverage indicators to readme
You can see failures here:
http://travis-ci.org/course-hero/symfony-cron-bundle

Looked like an error on chmod

On Monday, November 10, 2014, Chris Verges <notifications@github.com> wrote:

> In .travis.yml:
>
> > @@ -0,0 +1,17 @@
> > +language: php
> > +php:
> > +  - 5.6
> > +  - 5.5
> > +  - 5.4
> > +  - 5.3
> > +  - hhvm
> > +matrix:
> > +  allow_failures:
> > +    - php: hhvm
> > +    - php: 5.3
>
> What failures are occurring under PHP 5.3?
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/course-hero/symfony-cron-bundle/pull/1/files#r20090719>
> .
>