Update README.md

Add note to "Overview of the Update Process."  The previous outline did not mention re-fetching root if a problem occurs during an update.
Add README.rst
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Update README.rst

Fix badges.
Update README.rst

Fix code blocks.
Remove README.md
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Update README.rst

Add links for source code development and the mailing list.
Merge branch 'develop' of https://github.com/theupdateframework/tuf into develop
Update README.rst

Add full links.
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Update README.rst

Add full links for METADATA and SECURITY.
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Update README.rst

Fix links in "Instructions for Contributors."
Merge branch 'develop' of https://github.com/vladimir-v-diaz/tuf into develop
Fix indentation in README.rst
Update release files.
Fix malformed link in README.

Add note about installing non-wheel package before tuf[tools] for pip <= 1.5.4
Merge pull request #236 from vladimir-v-diaz/develop

Update README + setup.py and add setup.cfg + MANIFEST.in for pre-release 0.9.8