Use explicit scoping instead of the default package private level

[nbrugger-tgm]

Codacy detected an issue:

Message: Use explicit scoping instead of the default package private level

Occurred on:

• Commit: 1473fd7
• File: src/main/java/com/niton/reactj/ReactiveController.java
• LineNum: 82
• Code: void modelChanged(Map<String, Object> changed){

Currently on:

• Commit: 18de809
• File: src/main/java/com/niton/reactj/ReactiveController.java
• LineNum: 71