Super happy jumping pickle man (#3)

* Added enemy class

* Added enemy class and fixed DumpFraction bug.

* Update README.md

* Fixed enemy movement bug, added game music.

* Fixed bug: Background music looping.

* Fixed enemey getting stuck on wall. Code reorganization

* Minor updates

Content/Content.mgcb

@@ -25,6 +25,30 @@
 /processorParam:TextureFormat=Color
 /build:CastleWall TS16.png
 
+#begin debugGrid.PNG
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:debugGrid.PNG
+
+#begin enemy.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:enemy.png
+
 #begin fonts/debugFont.spritefont
 /importer:FontDescriptionImporter
 /processor:FontDescriptionProcessor
@@ -32,6 +56,24 @@
 /processorParam:TextureFormat=Compressed
 /build:fonts/debugFont.spritefont
 
+#begin grid.PNG
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:grid.PNG
+
+#begin music/sinkBeats.wav
+/importer:WavImporter
+/processor:SoundEffectProcessor
+/processorParam:Quality=Best
+/build:music/sinkBeats.wav
+
 #begin platform.png
 /importer:TextureImporter
 /processor:TextureProcessor