Changes to User/PJayChen

• 2013-11-18 10:47:10 UTC (PJayChen): modify some content
• 2013-11-18 09:33:37 UTC (PJayChen): Project plan
• 2013-11-18 09:19:18 UTC (PJayChen): 心得
• 2013-11-18 08:36:02 UTC (PJayChen): outline & self introduction