* Address shellcheck concerns with n2n_gateway.sh script
* Rename n2n_gateway.sh to live with all the other scripts (and update docs)
* Rename hack_fakeautoconf to make it clearly a shell script
* Address shellcheck concerns with hack_fakeautoconf.sh
* Rename python scripts to match other n2n tools
* Fix windows compile - when streamlining the use of hack_fakeautoconf.sh, I forgot to update all uses of this script
* Use Markdown for Android build docs, fix typos
* Format and correct syntax errors/irregularities in existing Markdown documents
* Convert `txt`-based docs to Markdown, update macOS instructions
* Use GitHub conventions for README, fix typos, add link to `gon2n`
* Fix case sensitivity issues