add a basic README and LICENSE

LICENSE.txt

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+(http://opensource.org/licenses/MIT)
+
+Copyright (c) 2013 Sami Vaarala
+
+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.txt

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+=======
+Duktape
+=======
+
+Duktape is a small and portable Ecmascript E5/E5.1 implementation.
+It is intended to be easily embeddable into C programs, with a C API
+similar in spirit to Lua's.
+
+The goal is to support the full E5 feature set like Unicode strings
+and Perl 5 -like regular expressions.  Other feature highlights:
+
+  * Custom types (like pointers and buffers) for better C integration
+
+  * Reference counting and mark-and-sweep garbage collection, with
+    finalizer support
+
+  * Co-operative threads, a.k.a. coroutines
+
+  * Tail call support
+
+For building, see::
+
+  doc/building.txt
+
+For an API description for calling code, see::
+
+  doc/api.txt
+
+The internal design is described in a bunch of separate documents.
+You should begin with the overview in::
+
+  doc/design.txt
+
+Duktape is licensed under the MIT license (see ``LICENSE.txt``).
+
+Have fun!
+