Added readme file for git

README.md

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+# Simple Thread Pool for POSIX pthread
+
+This is a very simple implementation of a ThreadPool that uses POSIX threads. It's written to be simple, not versatile.
+
+### License
+
+MIT. In other words, you're free to do with this code whatever you want.
+
+### Usage
+
+There is an example on how to use the code in the directory `examples`. 
+
+Other than that, all you have to do is:
+
+ * Include the file `ThreadPool_pthread.h`
+ * Add the sources in the directory `src` to your sources
+ * Link to pthread (with `-pthread` on Linux/MAC/POSIX systems, or download the Windows version of pthread and use it)
+ * Start coding!
+
+Using the code is very simple. All you have to do is:
+
+ * Create an object `ThreadPool_pthread pool(num)`, where num is the number of threads
+ * Use the member function `pool.push_task(function, parameters)`, to add tasks to the pool, where `function` is a function pointer to the function to be added, and `parameters` is a `void*` that contains the parameters.
+ * Call `pool.finish()`, which will block until all tasks are finished.
+
+Note: Return values in the `function` are omitted.
+Note: The function signature is `void* function(void* parameters)`.
+
+### Makefiles
+
+There's a make file that builds the example. There's also a qmake file that builds the example too.