Convert matrix index to gcode

#39 Save GCode in file
Convert a list of index to gcode string in an array

pcbdevice/utils/TestUtils.py

@@ -11,4 +11,11 @@ def readIntFile(filePath):
 			
 		completeFile.append(tempArray)
 	
-	return completeFile
+	return completeFile
+
+def readStringFile(filePath):
+	file = open(filePath, 'r')
+	lines = file.readlines()
+	file.close()
+	
+	return lines