📚 Add My buttons to documentation (#150)

plex/DOCS.md

@@ -10,15 +10,25 @@ and streams them to all of your devices.
 The installation of this add-on is pretty straightforward and not different in
 comparison to installing any other Home Assistant add-on.
 
-1. Search for the “Plex Media Server” add-on in the Hass.io 166 add-on store
-   and install it.
+1. Click the Home Assistant My button below to open the add-on on your Home
+   Assistant instance.
+
+   [![Open this add-on in your Home Assistant instance.][addon-badge]][addon]
+
+1. Click the "Install" button to install the add-on.
 1. Surf to <https://www.plex.tv/claim> and get your claim token.
 1. Update the add-on config with the claim code you've got in the previous step.
 1. Save the add-on configuration.
 1. Start the "Plex Media Server" add-on.
 1. Check the logs of the "Plex Media Server" to see if everything went well.
 1. Login to the Plex admin interface and complete the setup process.
 
+Home Assistant, by default, ships with the Community Add-ons store installed.
+However, if it is missing (for any reason), you can add it by clicking the
+button My button below.
+
+[![Add repository to your Home Assitant instance.][repository-badge]][repository]
+
 **NOTE**: When adding media locations, please use `/share` as the base
 directory.
 
@@ -187,6 +197,8 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 
+[addon-badge]: https://my.home-assistant.io/badges/supervisor_addon.svg
+[addon]: https://my.home-assistant.io/redirect/supervisor_addon/?addon=a0d7b954_plex
 [contributors]: https://github.com/hassio-addons/addon-plex/graphs/contributors
 [discord-ha]: https://discord.gg/c5DvZ4e
 [discord]: https://discord.me/hassioaddons
@@ -195,5 +207,7 @@ SOFTWARE.
 [issue]: https://github.com/hassio-addons/addon-plex/issues
 [reddit]: https://reddit.com/r/homeassistant
 [releases]: https://github.com/hassio-addons/addon-plex/releases
+[repository-badge]: https://my.home-assistant.io/badges/supervisor_add_addon_repository.svg
+[repository]: https://my.home-assistant.io/redirect/supervisor_add_addon_repository/?repository_url=https%3A%2F%2Fgithub.com%2Fhassio-addons%2Frepository
 [semver]: http://semver.org/spec/v2.0.0.htm
 [webtools]: https://github.com/ukdtom/WebTools.bundle/wiki