Add repo readme

Should this be: [![Build status](https://ci.appveyor.com/api/projects/status/i4qqobqxvxwis666?svg=true)](https://ci.appveyor.com/project/pelson/conda-recipes-scitools-311)
(``[![Build status](https://ci.appveyor.com/api/projects/status/i4qqobqxvxwis666?svg=true)](https://ci.appveyor.com/project/pelson/conda-recipes-scitools-311)``)