add icon file

Author: Daniel Llewellyn

README.md

@@ -1,5 +1,5 @@
 <h1 align="center">
-  <img src="https://avatars1.githubusercontent.com/u/29598503?v=3&s=256" alt="GIMP">
+  <img src="gimp.png" alt="GIMP">
   <br />
   GIMP - The GNU Image Manipulation Program
 </h1>
@@ -37,7 +37,7 @@ upstream so GIMP can authoritatively publish future releases.
   - [x] Rename the forked Snapcrafters template repository
   - [x] Update logos and references to `[Project]` and `[my-snap-name]`
   - [x] Create a snap that runs in `devmode`
-  - [ ] Register the snap in the store, **using the preferred upstream name**
+  - [x] Register the snap in the store, **using the preferred upstream name**
   - [ ] Add a screenshot to this `README.md`
   - [ ] Publish the `devmode` snap in the Snap store edge channel
   - [ ] Add install instructions to this `README.md`
@@ -53,7 +53,7 @@ upstream so GIMP can authoritatively publish future releases.
   - [ ] Post an announcement in the [Snapcraft Forum](https://forum.snapcraft.io) - [link]()
   - [ ] Submit a pull request or patch upstream that adds snap install documentation - [link]()
   - [ ] Submit a pull request or patch upstream that adds the `snapcraft.yaml` and any required assets/launchers - [link]()
-  - [ ] Add upstream contact information to the `README.md`  
+  - [ ] Add upstream contact information to the `README.md`
   - If upstream accept the PR:
     - [ ] Request upstream create a Snap store account
     - [ ] Contact the Snap Advocacy team to request the snap be transferred to upstream

gimp.png

@@ -8,6 +8,7 @@ description: |
   options and 3rd party plugins.
 
 confinement: strict
+icon: gimp.png
 
 apps:
   gimp: