modify README so that official documentations
links wiki because meteos is not official project currently.
Closes-Bug: #1681555
Change-Id: I524eb7386f8f89e876b0815c6468cf75670a3c0b
Adding the overview document and changed a few documents to make
the docs better.
Change-Id: Ia1fd7f037f85cc1363678f16232c1d9371fdb292
Partial-Implements: blueprint meteos-docs