Merges branch 'release/0.1.18' into develop
First pass at better docs.
Fixes inline code.
Clarify inline code.
Unifies header styles.
Makes describe optional, Closes #14
Adds default lib dir and Closes #15

lib and spec dirs are recursively scanned for riml files
and folders which have them are included in the -I lib path.
Bumps version to 0.1.19
Merges branch 'release/0.1.19'