Added JSHint and JSXHint for linting the code.

assets/js/components/Alert.jsx

@@ -0,0 +1,19 @@
+var React = require('react');
+var classNames = require('classnames');
+
+var Alert = React.createClass({
+
+    propTypes: {
+        type: React.PropTypes.string.isRequired,
+        text: React.PropTypes.string.isRequired
+    },
+
+    render: function() {
+        return(
+            <div className={classNames('alert', 'alert-' + this.props.type)}>{this.props.text}</div>
+        );
+    }
+
+});
+
+module.exports = Alert;