Add functions description

Add python documentation

pcbdevice/utils/TestUtils.py

@@ -1,4 +1,10 @@
 def readIntFile(filePath):
+	"""
+	Read a matrix file
+	
+	:param filePath: File path to read from
+	:return: The matrix in int
+	"""
 	completeFile = []
 	file = open(filePath, 'r')
 	lines = file.readlines()
@@ -14,6 +20,12 @@ def readIntFile(filePath):
 	return completeFile
 
 def readStringFile(filePath):
+	"""
+	Read all lines of a file
+	
+	:param filePath: File path to read from
+	:return: Array of all lines in the file
+	"""
 	file = open(filePath, 'r')
 	lines = file.readlines()
 	file.close()