Reading text file updated to read with open

currently reading text file with TextSpitter returns a byte str which is difficult to handle. Let's just open file with open() and return text str.

Author: shahid017

TextSpitter/core.py

@@ -72,4 +72,5 @@ def DocxFileRead(self):
         return text
 
     def TextFileRead(self):
-        return self.get_contents()
+        text = open(self.file).read()
+        return text