CONTRIBUTORS in activemerchant-1.45.0 vs CONTRIBUTORS in activemerchant-1.46.0

@@ -507,5 +507,14 @@
 * Piers Chambers (varyonic)
 
 Global Transport (September 2014)
 
 * Duff O'Melia (duff)
+
+IPP (December 2014)
+
+* (InfraRuby)
+
+QuickBooks Payments (January 2015)
+
+* Arbab Ahmed (bizla)
+* Ivan Sanchez (ivanfer)