Update deepcut.py

Author: wannaphong

pythainlp/tokenize/deepcut.py

@@ -6,10 +6,10 @@
 except ImportError:
 	'''ในกรณีที่ยังไม่ติดตั้ง deepcut ในระบบ'''
 	from pythainlp.tools import install_package
-	install_package('deepcut')
+	install_package("deepcut")
 	try:
 		import deepcut
 	except ImportError:
-		sys.exit('Error ! using pip install deepcut')
+		raise Exception("ImportError ! using pip install deepcut")
 def segment(text):
-    return deepcut.tokenize(text)
+    return deepcut.tokenize(text)