docs(guide): convert /tutorials/commands.md to rst (#2171)
docs(guide): convert /tutorials/commands.md to rst (#2171)

* docs(guide): convert /tutorials/commands.md to rst

Fixes NODE-2198

* squashme incorporating feedback

* docs(guide): incorporating proper boilerplate format

mongodb/node-mongodb-native,mongodb/node-mongodb-native,mongodb/node-mongodb-native,mongodb/node-mongodb-native