Snippet template proposal

Resolves #4.

This is the snippet template that we have sort of decided on over the last couple of weeks. Please comment below so we can conclude on a format and start working on #1.

snippet-template.md

@@ -0,0 +1,29 @@
+### componentName
+
+Explain briefly what the snippet does.
+
+Explain briefly how the snippet works.
+
+```jsx
+function componentName(props) {
+  return <div>{props}</div>;
+};
+```
+<!-- OR -->
+```jsx
+class componentName extends React.Component {
+  constructor(props){}
+  render(){
+    return <div>{props}</div>;
+  }
+}
+```
+
+<!-- tags: (separate each by a comma) -->
+
+<!-- expertise: (0,1,2) -->
+<!-- Expertise levels:
+	0: beginner
+	1: intermediate
+	2: advanced
+-->