message: Corrected Typo in Additional Resources Section
  Corrected the Typo 'Hasing' to 'Hashing' in second item in Additional Resources section. Also added Wikipedia link for the LSH.
diff: @@ -81,4 +81,4 @@ Additional Resources
  -# Michael Calonder, Vincent Lepetit, Christoph Strecha, and Pascal Fua, "BRIEF: Binary Robust
  Independent Elementary Features", 11th European Conference on Computer Vision (ECCV), Heraklion,
  Crete. LNCS Springer, September 2010.
  -2. LSH (Locality Sensitive Hasing) at wikipedia.
  +2. [LSH (Locality Sensitive Hashing)](https://en.wikipedia.org/wiki/Locality-sensitive_hashing) at wikipedia.
  