Changing to CGFloat, instead of Double as per feedback provided by Ryan.

Root Cause: Swift was treating it as Double, instead of Float.

MVMCoreUI/Atoms/Views/ProgressBar.swift

@@ -54,7 +54,7 @@ import Foundation
         if let thickness = json?.optionalCGFloatForKey("thickness") {
             self.thickness = thickness
         }
-        if let percentage = json?["percent"] as? Double {
+        if let percentage = json?["percent"] as? CGFloat {
             progress = Float(percentage/100.0)
         }
         if let progressColor = json?.optionalStringForKey("progressColor") {