Initial commit, adding LICENSE and README.

LICENSE

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+Copyright (c) 2011 Stanford University (liboauthcpp)
+Copyright (C) 2011 by swatkat (swatkat.thinkdigitATgmailDOTcom) (libtwitcurl)
+
+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

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+liboauthcpp
+-----------
+
+liboauthcpp is a pure C++ library for performing OAuth requests. It
+doesn't contain any networking code -- you provide for performing HTTP
+requests yourself, however you like -- instead focusing on performing
+OAuth-specific functionality and providing a nice interface for it.
+If you already have infrastructure for making HTTP requests and are
+looking to add OAuth support, liboauthcpp is for you.
+
+Requirements
+------------
+
+You should only need:
+
+* CMake
+* A C++ compiler for your platform (e.g. g++, Microsoft Visual C++)
+
+Compiling
+---------
+
+The build process is simple:
+
+cd liboauthcpp
+cd build
+cmake .
+make            # or open Visual Studio and build the solution
+
+If your own project uses CMake you can also include
+build/CMakeLists.txt directly into your project and reference the
+target "oauthcpp", a static library, in your project.
+
+License
+-------
+
+liboauthcpp is MIT licensed. See the LICENSE file for more details.
+
+liboauthcpp is mostly taken from libtwitcurl
+(http://code.google.com/p/twitcurl/), which is similarly licensed. It
+mostly serves to isolate the OAuth code from libtwitcurl's Twitter and
+cURL specific code.
+
+libtwitcurl also borrowed code from other projects:
+twitcurl uses HMAC_SHA1 from http://www.codeproject.com/KB/recipes/HMACSHA1class.aspx
+twitcurl uses base64 from http://www.adp-gmbh.ch/cpp/common/base64.html