+ update SVGgh to version 1.9.2 with iOS 11 compatibility (#426)

+ update RoboVM to version 2.3.2 with iOS  11 compatibility with InteliJ-PlugIn Version 2.3.3-SNAPSHOT and compatibility with Xcode 9.0

vtm-ios/natives/SVGgh.framework/Headers/SVGContext.h

@@ -81,7 +81,7 @@ NS_ASSUME_NONNULL_BEGIN
 -(CGFloat) opacity;
 
 /*! @brief opacity is dependent (via inheritence) as you descend an SVG Document. This opacity is the place to keep track of updated opacity.
- * @param the current opacity (defaults to 1.0)
+ * @param opacity the current opacity (defaults to 1.0)
  */
 -(void) setOpacity:(CGFloat)opacity;
 

vtm-ios/natives/SVGgh.framework/Headers/SVGgh.h

@@ -49,4 +49,4 @@
 
 /*! \brief Because views and buttons are dynamically instantiated from Storyboards and Nibs, code for their classes might not link in from a static library. Thus this method to make sure the class gets called at least once from code.
 */
-void MakeSureSVGghLinks();
+void MakeSureSVGghLinks(void);