Update Travis config for Python specific handling

See the Python documentation for more information:
https://docs.travis-ci.com/user/languages/python/

Signed-off-by: JoeLametta <JoeLametta@users.noreply.github.com>

.travis.yml

@@ -1,6 +1,13 @@
+dist: xenial
 sudo: required
 
-language: bash
+language: python
+python:
+  - "2.7"
+virtualenv:
+  system_site_packages: false
+
+cache: pip
 
 env:
     - FLAKE8=false
@@ -9,21 +16,20 @@ env:
 install:
     # Dependencies
     - sudo apt-get -qq update
-    - sudo pip install --upgrade -qq pip
-    - sudo apt-get -qq install cdparanoia cdrdao flac gir1.2-glib-2.0 libcdio-dev libiso9660-dev libsndfile1-dev python-gi python-musicbrainzngs python-mutagen python-setuptools sox swig libcdio-utils
-    - sudo pip install pycdio==0.21 requests setuptools_scm
+    - pip install --upgrade -qq pip
+    - sudo apt-get -qq install cdparanoia cdrdao flac gir1.2-glib-2.0 libcdio-dev libgirepository1.0-dev libiso9660-dev libsndfile1-dev sox swig libcdio-utils
+    - pip install musicbrainzngs mutagen pycdio==0.21 PyGObject requests setuptools setuptools_scm
 
     # Testing dependencies
-    - sudo apt-get -qq install python-twisted-core
-    - sudo pip install flake8
+    - pip install twisted flake8
 
     # Build bundled C utils
     - cd src
     - sudo make install
     - cd ..
 
     # Installing
-    - sudo python setup.py install
+    - python setup.py install
 
 script:
     - if [ ! "$FLAKE8" = true ]; then python -m unittest discover; fi