Gitignore more files.
Introduced demo project => used to run tests, provide code samples and useful as a development sandbox.
Introduced HealthCheck class, as a subclass of unittest.TestCase. Provided a fake health check in demo. Added 'make healthcheck'.
Introduced **experimental** HealthCheckView that loads, runs and displays results of doctor.HealthTest.
Improved HTML health check report page (still minimal).
Fixed usage of HealthCheckView's health_check_root argument.
Declared 'doctor' in demo's INSTALLED_APPS.
Less code in demo's tests.
Added tests about HealthCheckView with root (and fixed related bugs).
Added support for TravisCI.org continuous integration service.
Upgraded to Django-1.4.5: fixes 'Bad magic number' with Python 2.6.
Fixed str.format() usage for Python 2.6, in demo's tests.
Merge pull request #1 from novagile/demo

Provide demo project with the application
Merge pull request #2 from novagile/healthcheck-testcase

TestCase like health checks
Merge pull request #3 from novagile/healthcheck-view

Use HealthCheckView to search, load, run and display results of health checks