Revised installation guidelines within README.rst, README.md and...

Revised installation guidelines within README.rst, README.md and installation.rst. Added link for nosetests HTML report.
3 jobs for tests in 6 minutes and 38 seconds
Status Name Job ID Coverage
  Test
passed test_arosics #1540

00:00:57

59.0%
passed test_arosics_install #1541

00:05:25

 
  Cleanup
passed cleanup_pypirc #1542

00:00:14