Add sign script to to sign for Firefox (#9)

Author: kfarnung

README.md

@@ -16,6 +16,22 @@ as appropriate.
 
 ## Testing
 
-- `npm install --global web-ext`
-- `cd addon/`
-- `web-ext run`
+### Firefox
+
+- `npm start`
+
+### Chrome
+
+Enable developer mode and load the `addon` folder as an unpacked extension.
+
+## Packaging/Signing
+
+### Firefox
+
+- Find your developer API key: https://addons.mozilla.org/en-US/developers/addon/api/key/
+- Set the required environment variables:
+  ```
+  export AMO_JWT_ISSUER=<issuer>
+  export AMO_JWT_SECRET=<secret>
+  ```
+- `npm run sign`

package.json

@@ -7,6 +7,7 @@
     "lint": "eslint . && web-ext lint -s addon",
     "lint-fix": "eslint . --fix",
     "start": "web-ext run -s addon",
+    "sign": "web-ext sign -s addon --api-key=$AMO_JWT_ISSUER --api-secret=$AMO_JWT_SECRET",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "license": "MIT",