Clarify how to access features as end user (#89)

* Clarify how to access features as end user

1. Add note about connecting your account to access features as an end user
   - Feedback on how to make this more obvious is welcome
2. Fix section headers in FAQ

* Update README.md

README.md

@@ -6,6 +6,10 @@ A GitHub plugin for Mattermost. Supports GitHub SaaS and Enterprise versions.
 
 ## Features
 
+After your System Admin has [configured the GitHub plugin](#Configuration), run `/github connect` in a Mattermost channel to connect your Mattermost and GitHub accounts.
+
+Once connected, you'll have access to the following features:
+
 * __Daily reminders__ - the first time you log in to Mattermost each day, get a post letting you know what issues and pull requests need your attention
 * __Notifications__ - get a direct message in Mattermost when someone mentions you, requests your review, comments on or modifies one of your pull requests/issues, or assigns you on GitHub
 * __Sidebar buttons__ - stay up-to-date with how many reviews, unread messages, assignments and open pull requests you have with buttons in the Mattermost sidebar
@@ -21,8 +25,6 @@ A GitHub plugin for Mattermost. Supports GitHub SaaS and Enterprise versions.
     * __Update settings__ - Use `/github settings` to update your settings for notifications and daily reminders
     * __And more!__ - Run `/github help` to see what else the slash command can do
 
-To use any of the above features, first connect your Mattermost account to your GitHub account with `/github connect`.
-
 ## Configuration
 
 __If you are using GitHub Enterprise, replace all GitHub links below with your GitHub Enterprise URL__
@@ -125,10 +127,10 @@ Set up your GitHub webhook from the repository instead of the organization. Noti
 
 The reminder and `/github todo` will still search the whole organization, but only list items assigned to you.
 
-## How do I share feedback on this plugin?
+### How do I share feedback on this plugin?
 
 Feel free to create a GitHub issue or [join the GitHub Plugin channel on our community Mattermost instance](https://pre-release.mattermost.com/core/channels/github-plugin) to discuss.
 
-## How does the plugin save user data for each connected GitHub user?
+### How does the plugin save user data for each connected GitHub user?
 
 GitHub user tokens are AES encrypted with an At Rest Encryption Key configured in the plugin's settings page. Once encrypted, the tokens are saved in the `PluginKeyValueStore` table in your Mattermost database.