Move most of the documentation to .rst format

docs/commands/doctor.rst

@@ -0,0 +1,20 @@
+.. _doctor:
+
+Bash-it doctor
+^^^^^^^^^^^^^^
+
+If you encounter problems with any part of Bash-it, run the following command:
+
+.. code-block:: bash
+
+   bash-it doctor
+
+This will reload your bash profile and print out logs of various parts in Bash-it.
+Note that this command at default will print all logs, including debug logs.
+You can call it like this:
+
+.. code-block:: bash
+
+   bash-it doctor [errors/warnings/all]
+
+In order to get wanted verbosity.