Enable integration of Plinth with Travis-CI

- Add files .travis.yml and requirements.txt
- In setup.py, remove 'pygobject' from install_requires
- In setup.py, add 'pyyaml' to install_requires
- Add file plinth/tests/coverage/__init__.py
- Rename file plinth/tests/coverage/test_coverage.py to coverage.py
- In plinth/tests/coverage/coverage.py, rename class TestCoverageCommand
  to CoverageCommand

.travis.yml

@@ -0,0 +1,29 @@
+# Travis-CI configuration file for Plinth
+
+language: python
+python:
+  - "3.2"
+
+# Debian packages required
+addons:
+  apt_packages:
+  - python3-gi
+
+virtualenv:
+  system_site_packages: true
+
+# Command to install dependencies
+install: "pip install -r requirements.txt"
+
+# Command to run tests
+script: python3 setup.py test
+
+notifications:
+  email:
+    on_success: change
+    on_failure: always
+  irc:
+    channels:
+      - "irc.oftc.net#freedombox"
+    on_success: always
+    on_failure: always

plinth/tests/coverage/coverage.py

@@ -45,7 +45,7 @@ FILES_TO_OMIT = ['plinth/tests/*.py']
 COVERAGE_REPORT_DIR = 'plinth/tests/coverage/report'
 
 
-class TestCoverageCommand(setuptools.Command):
+class CoverageCommand(setuptools.Command):
     """
     Subclass of setuptools Command to perform code test coverage analysis.
     """

requirements.txt

@@ -0,0 +1,4 @@
+cherrypy >= 3.0
+coverage >= 3.7
+django >= 1.7.0
+pyyaml

setup.py

@@ -31,7 +31,7 @@ import shutil
 import subprocess
 
 from plinth import __version__
-from plinth.tests.coverage import test_coverage
+from plinth.tests.coverage import coverage
 
 
 DIRECTORIES_TO_CREATE = [
@@ -115,8 +115,7 @@ setuptools.setup(
         'cherrypy >= 3.0',
         'django >= 1.7.0',
         'django-bootstrap-form',
-        'pygobject',
-        'yaml'
+        'pyyaml',
     ],
     tests_require=['coverage >= 3.7'],
     include_package_data=True,
@@ -143,6 +142,6 @@ setuptools.setup(
     cmdclass={
         'clean': CustomClean,
         'install_data': CustomInstallData,
-        'test_coverage': test_coverage.TestCoverageCommand
+        'test_coverage': coverage.CoverageCommand
     },
 )