meetup: initial commit

cpp/meetup/README.md

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+# Meetup
+
+Calculate the date of meetups.
+
+Typically meetups happen on the same day of the week.
+
+Examples are
+
+- the first Monday
+- the third Tuesday
+- the Wednesteenth
+- the last Thursday
+
+Note that "Monteenth", "Tuesteenth", etc are all made up words. There
+was a meetup whose members realised that there are exactly 7 days that
+end in '-teenth'. Therefore, one is guaranteed that each day of the week
+(Monday, Tuesday, ...) will have exactly one date that is named with '-teenth'
+in every month.
+
+## Getting Started
+
+Make sure you have read [the C++ page](http://exercism.io/languages/cpp) on
+exercism.io.  This covers the basic information on setting up the development
+environment expected by the exercises.
+
+## Passing the Tests
+
+Get the first test compiling, linking and passing by following the [three
+rules of test-driven development](http://butunclebob.com/ArticleS.UncleBob.TheThreeRulesOfTdd).
+Create just enough structure by declaring namespaces, functions, classes,
+etc., to satisfy any compiler errors and get the test to fail.  Then write
+just enough code to get the test to pass.  Once you've done that,
+uncomment the next test by moving the following line past the next test.
+
+```C++
+#if defined(EXERCISM_RUN_ALL_TESTS)
+```
+
+This may result in compile errors as new constructs may be invoked that
+you haven't yet declared or defined.  Again, fix the compile errors minimally
+to get a failing test, then change the code minimally to pass the test,
+refactor your implementation for readability and expressiveness and then
+go on to the next test.
+
+Try to use standard C++11 facilities in preference to writing your own
+low-level algorithms or facilities by hand.  [CppReference](http://en.cppreference.com/)
+is a wiki reference to the C++ language and standard library.  If you
+are new to C++, but have programmed in C, beware of
+[C traps and pitfalls](http://www.slideshare.net/LegalizeAdulthood/c-traps-and-pitfalls-for-c-programmers).
+
+## Source
+
+Jeremy Hinegardner mentioned a Boulder meetup that happens on the Wednesteenth of every month [view source](https://twitter.com/copiousfreetime)