Update README to markdown
The following Merge Request (MR) has been forwarded from GitHub in order to prevent the GNOME Project from losing contributions coming from un-official channels. And for contributors to not see their valuable contributions not being accounted for.
Relevant information:
Github handle: pigsflew
MR URL: https://github.com/GNOME/evolution/pull/5
Patch URL: https://github.com/GNOME/evolution/pull/5.patch
Body of the MR:
for easier reading and usage on places where markdown is automatically rendered properly, like Github.