Add example project for building an IPak with corresponding ff

docs/example/IPakZone/zone_source/IPakZone_ff.zone

@@ -0,0 +1,11 @@
+// Set the game to "Call Of Duty: Black Ops 2"
+>game,T6
+
+// Overwrite the name of the fastfile to be "IPakZone"
+>name,IPakZone
+
+// Set type to fastfile
+>type,fastfile
+
+// Add custom assets
+image,sample_image