Simplify references to axes objects
Update generation of getting-started figure
Increase DPI so edges don't look discontinuous
Merge pull request #49 from tonysyu/axes-objects

Simplify references to axes objects in getting started section
Homogenize references to match introduction.
Minor fixes to development practices section
Merge pull request #51 from jni/copy-edit-dev

Copy-edit the development practices section
Minor edits to text and refs in research section
Make lesion figure wide
Merge pull request #52 from jni/copy-edit-res

Minor changes to research section