Changes

* Member: Bing Pang

* Task: Create prototypes and empty definitions for all classes

<u>'''2. CLabel '''</u>

* Member: Bing Pang

* Task: Code CLabel.h and CLabel.cpp

<u>'''3. CDialog '''</u>

* Member: Haysean Maharajah & Jonathan Hivon

* Task: Code CDialog.h and CDialog.cpp

<u>'''4. CLineEdit'''</u>

* Member: Gilbert Quach

* Task: Code CLineEdit.h and CLineEdit.cpp

<h3>'''CIO 20133 Release 0.2'''</h3>