Initial commit of the document parsing app.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/document_parsing/exceptions.py

@@ -0,0 +1,22 @@
+from __future__ import unicode_literals
+
+
+class OCRError(Exception):
+    """
+    Raised by the OCR backend
+    """
+    pass
+
+
+class ParserError(Exception):
+    """
+    Base exception for file parsers
+    """
+    pass
+
+
+class NoMIMETypeMatch(ParserError):
+    """
+    There is no parser registered for the specified MIME type
+    """
+    pass