README: Adding README.asciidoc

Adding a README.asciidoc as github renders the
.asciidoc files. README.asciidoc is a soft link
to original  0.Readme.txt.

Signed-off-by: Lalatendu Mohanty <lmohanty@redhat.com>
Merge pull request #2 from LalatenduMohanty/master

README: Adding README.asciidoc