Add license and readme

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2023, Dimitri Lozeve
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.org

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+* BQN HTTP library
+
+FFI bindings to [[https://curl.se/libcurl/][libcurl]] for [[https://mlochbaum.github.io/BQN/][BQN]].
+
+** Making requests
+
+Only GET and POST requests are implemented at this time.
+
+#+begin_src bqn
+⟨Get,Post⟩←•Import"curl.bqn"
+#+end_src
+
+Simple GET requests:
+#+begin_src bqn
+r←Get"https://httpbin.org/get"
+#+end_src
+
+You can pass headers as a left argument:
+#+begin_src bqn
+r←⟨"Content-Type: application/json"⟩Get"https://httpbin.org/get"
+#+end_src
+
+Arguments, port number, etc, can be included in the URL.
+
+For POST requests, pass data as an additional string parameter. It
+will not be converted or encoded in any way.
+#+begin_src bqn
+r←⟨"Content-Type: application/json"⟩Post"https://httpbin.org/post"‿"{""key"": ""value""}"
+#+end_src
+
+** Response objects
+
+The response object is a namespace with the following elements:
+- ~code~: the response code.
+- ~headers~: the response headers as a single string, separated by newlines.
+- ~content~: the response content, as raw bytes.
+- ~time~: the time the request took, in seconds.
+
+If your endpoint returns text, you can use ~FromBytes~ from
+[[https://github.com/mlochbaum/bqn-libs/blob/master/strings.bqn][bqn-libs/strings.bqn]] to decode UTF-8.