Add basic readme files

packages/fether-electron/README.md

+# fether-electron
+
+Electron wrapper around `fether-react`.

packages/fether-react/README.md

+# fether-react
+
+Fether React SPA app.

packages/fether-react/src/utils/withBalance.js

@@ -19,7 +19,7 @@ import light from 'light-hoc';
  * A HOC on light.js to get the current balance.
  *
  * @example
- * @withBalance
+ * @withBalance()
  * class MyComponent extends React.Component{
  *
  * }

packages/fether-ui/README.md

 # fether-ui
 
 UI components used in Fether.
+
+## TODO
+
+Use Semantic UI (or another UI libray) as a base, instead of recoding everything ourselves.

packages/light-hoc/README.md

@@ -3,3 +3,23 @@
 A HOC to use [@parity/light.js](https://github.com/parity-js/light.js) with React. Basically the equivalent of oo7-react for Observables.
 
 Probably this should go inside its own repo.
+
+## Usage
+
+The libray provides a higher-order component to use these Observables easily with React apps.
+
+```javascript
+import light from '???'; // ??? to be decided
+import { syncing$ } from '@parity/light.js';
+
+@light({
+  syncingVariable: syncing$
+})
+class MyClass extends React.Component {
+  render() {
+    return <div>{JSON.stringify(this.props.syncingVariable)}</div>;
+  }
+}
+```
+
+The UI will automatically update when the syncing state changes.