H5 (#262)

* Cleanup .travis.yml #232

* Added HINTS.md file for nth prime exercise.  Issue #209

* Added HINTS.md for word-search exercise #209

* Revert "Added HINTS.md for word-search exercise #209"

This reverts commit d8ce9a4.

* Adding HINTS.md for proverb exercise.

* Revert "Adding HINTS.md for proverb exercise."

This reverts commit a593f8e.

* Revert "Added HINTS.md file for nth prime exercise.  Issue #209"

This reverts commit a2e484c.

* Adding HINTS.md to proverb exercise

* Adding HINTS.md file to word-search exercise

exercises/word-search/HINTS.md

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+## HINTS
+
+One of the uses of Tuples is returning multiple values from a function.   In this exercise, write
+a function that returns a Tuple (the x- and y- part of a coordinate).
+
+For more information on Tuples, see [this link](https://msdn.microsoft.com/en-us/library/system.tuple(v=vs.110).aspx).