requirements2.txt install of pymclevel does NOT include yaml files

[curtjen]

I ended up just git cloning from https://github.com/mcedit/pymclevel and copying them over, like this (done from inside pymclevel directory after it's cloned):

cp -fv *.yaml ~/.virtualenvs/skyblock-ce/lib/python2.7/site-packages/pymclevel/

[intchanter]

mcedit/pymclevel#180 has a patch to address this.

[intchanter]

Updated README.rst in 366d40c. I'll close this for now, and let's get another issue to update the documentation agaiin after the pull request is merged.