Add libndtypes and ndtypes-python.

Author: skrah

content/pages/projects/libndtypes.md

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+Title: Libndtypes
+Project: core
+Category: Projects
+Subtitle: A C/C++ library for a low-level version of Datashape
+Docs: http://libndtypes.readthedocs.org/en/latest/index.html

content/pages/projects/ndtypes-python.md

@@ -0,0 +1,5 @@
+Title: Ndtypes-python
+Project: core
+Category: Projects
+Subtitle: Python bindings for libndtypes
+Docs: http://ndtypes-python.readthedocs.org/en/latest/index.html