Removed some spaces

Closes #140
Merge pull request #146 from leonkunert/master

Removed some spaces
Fix for change to enum namespaces
Merge pull request #148 from gchp/enum-namespace

Fix for change to enum namespaces
Update .travis.yml

Disable automatic tests for now. As long rust has so many breaking changes they are not very helpful.
Change occurances of rust-image to image
Merge pull request #149 from gchp/readme

Change occurances of rust-image to image
Fixed slice breaking changes

Closes https://github.com/PistonDevelopers/image/issues/150
Merge pull request #152 from bvssvni/master

Fixed slice breaking changes
Fixed bugs where enum variants are considered variables

Closes https://github.com/PistonDevelopers/image/issues/151
Merge pull request #153 from bvssvni/master

Fixed bugs where enum variants are considered variables
Fixed compiler warnings

* Using Int::pow
Merge pull request #154 from bvssvni/master

Fixed compiler warnings
Create PPM decoder skeleton