Merge pull request #161 from KleeGroup/focus-exception

[exception] Add focus exception.

exception/FocusException.js

@@ -0,0 +1,16 @@
+let CustomException = require('./CustomException');
+/**
+ * Class standing for the FocusException exceptions.
+ */
+class FocusException extends CustomException {
+	/**
+	 * Exception constructor..
+	 * @param messgae {string} - Exception message.
+	 * @param options {object} - Object to add to the exception.
+	 */
+	constructor(message, options) {
+		super("FocusException", message, options);
+	}
+}
+
+module.exports = FocusException;

exception/README.md

@@ -1 +1,5 @@
 Exceptions
+
+In focus, there is different types of Exceptions:
+- ArgumentInvalid
+- FocusException 

exception/index.js

@@ -3,5 +3,6 @@ module.exports = {
 	ArgumentNullException: require('./ArgumentNullException'),
 	CustomException: require('./CustomException'),
 	DependencyException: require('./DependencyException'),
+	FocusException: require('./FocusException'),
 	NotImplementedException: require('./NotImplementedException')
 };