- Add function gray change to fingerprint image
 On branch master
	modified:   RecognitionFingerprint/src/com/vnexit/fingerprint/datamodel/ImageProcess.java
	modified:   RecognitionFingerprint/src/com/vnexit/fingerprint/form/FingerImage.java
	modified:   RecognitionFingerprint/src/com/vnexit/fingerprint/form/MainForm.java
	modified:   RecognitionFingerprint/src/com/vnexit/fingerprint/gaborfilter/GaborFilter.java