doc: added info on adding spm paths
fix: rst code style
Merge pull request #43 from mtcurran/master

added rtsmoking project's environment
enh: added new resting environment
updated resting environment
Merge pull request #44 from satra/master

satra resting environment
updated afni path
Merge pull request #45 from satra/master

updated afni path
added lyman rtsmoking environment