DoubleX RMMV Equip Prerequisites

[DoubleX]

Updates
v1.01d(GMT 1600 6-11-2015):

1. Simplified the notetag reading mechanisms
2. Fixed some typos   
v1.01c(GMT 1200 5-11-2015):
1. Fixed undefined this under DoubleX_RMMV.Equip_Prerequisites bug
v1.01b(GMT 0000 5-11-2015):
1. Fixed failing to load notetags due to nil data bug
v1.01a(GMT 1000 4-11-2015):                                          
1. Added <no weapon req: id>, <no armor req: id> and <weapon req: id> notetags                                                          
2. Fixed several logic and syntax errors                              
3. Increased this plugin's maintainability