Add placeholder code to ofxPiMapper and more exceptions to example .gitignore

example/.gitignore

@@ -4,3 +4,4 @@ obj
 *.plist
 *.xcconfig
 *~
+config.make

example/src/ofApp.h

@@ -2,6 +2,7 @@
 #define H_OF_APP
 
 #include "ofMain.h"
+#include "ofxPiMapper.h"
 
 class ofApp : public ofBaseApp
 {

src/ofxPiMapper.cpp

@@ -0,0 +1,11 @@
+#include "ofxPiMapper.h"
+
+ofxPiMapper::ofxPiMapper()
+{
+
+}
+
+ofxPiMapper::~ofxPiMapper()
+{
+	
+}

src/ofxPiMapper.h

@@ -0,0 +1,13 @@
+#ifndef H_OFX_PI_MAPPER
+#define H_OFX_PI_MAPPER
+
+#include "ofMain.h"
+
+class ofxPiMapper
+{
+public:
+	ofxPiMapper();
+	~ofxPiMapper();
+};
+
+#endif