updated readme and moved license to a separate file

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2014 Francesco Cagnin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,32 +1,6 @@
 # FP-growth
-This repository contains my C++ implementation of the well-known **FP-growth** algorithm, published in the hope that it will be useful. I carefully tested the code on three different samples and results were checked against [this other implementation](http://www.borgelt.net/fpgrowth.html) of the algorithm, but please don't assume the code is completely bug-free. Feel free to use the [issue tracker](https://github.com/integeruser/FP-growth/issues) to report any problem.  
+This repository contains a C++11 implementation of the well-known FP-growth algorithm, published in the hope that it will be useful. I tested the code on three different samples and results were checked against [this other implementation](http://www.borgelt.net/fpgrowth.html) of the algorithm.
 
-The files `fptree.hpp` and `fptree.cpp` contain the data structures and the algorithm, while `main.cpp` contains only a few tests.  
+The files `fptree.hpp` and `fptree.cpp` contain the data structures and the algorithm, and `main.cpp` contains a few tests.
 
-Compile the code using the appropriate options for C++11 (e.g. `-std=c++11` using g++).  
-
-Happy coding! :v:  
-
-
-## License
-The MIT License (MIT)
-
-Copyright (c) 2014 Francesco Cagnin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+Compile the code using the appropriate options for C++11 (e.g. `-std=c++11` using g++).