Add profile reader plug-in type

This type of plug-in will load a file as an instance container of the user profile type.

Contributes to issue CURA-1278.

cura/ProfileReader.py

@@ -0,0 +1,17 @@
+# Copyright (c) 2016 Ultimaker B.V.
+# Cura is released under the terms of the AGPLv3 or higher.
+
+from UM.PluginObject import PluginObject
+
+##  A type of plug-ins that reads profiles from a file.
+#
+#   The profile is then stored as instance container of the type user profile.
+class ProfileReader(PluginObject):
+    def __init__(self):
+        super().__init__()
+
+    ##  Read profile data from a file and return a filled profile.
+    #
+    #   \return \type{Profile} The profile that was obtained from the file.
+    def read(self, file_name):
+        raise NotImplementedError("Profile reader plug-in was not correctly implemented. The read function was not implemented.")