Reformatting INSTALL.md table of contents.
Reformatting INSTALL.md table of contents.

zbeekman/opencoarrays,zbeekman/opencoarrays,sourceryinstitute/opencoarrays,sourceryinstitute/opencoarrays,sourceryinstitute/opencoarrays,jerryd/opencoarrays,jerryd/opencoarrays,zbeekman/opencoarrays,jerryd/opencoarrays