Subversion migration cheat sheet (first-draft)

Cheat sheet for guidance on migrating and interoperation of Git, GitHub, and SVN.

[RENDERED](https://github.com/github/training-kit/blob/cheatsheet-subversion-migration/downloads/subversion-migration.md)
I know this is suppose to be some sort of tagline or summary, but it reads funny because of the word "to" being used too often. Maybe something like:

> From migration your Subversion content on Git repositories to understanding both shared and distinct vocabularies of the technologies, this sheet will come in handy

Or something similar. Maybe even:

> Migrating from Subversion content to Git repositories and understanding both shared and distinct vocabularies of the technologies: This sheet can help