add readme

Author: kkaefer

README

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+https://github.com/kkaefer/css-color-parser-cpp
+
+JavaScript parser for CSS color strings.
+
+> CSSColorParser::parse(" rgba (255, 128, 12, 0.5)");
+ Color [ 255, 128, 12, 0.5 ]
+> CSSColorParser::parse("#fff");
+ Color [ 255, 255, 255, 1 ]
+> CSSColorParser::parse("#ff0011");
+ Color [ 255, 0, 17, 1 ]
+> CSSColorParser::parse("slateblue");
+ Color [ 106, 90, 205, 1 ]
+> CSSColorParser::parse("blah");
+ Color [ 0, 0, 0, 1 ]
+> CSSColorParser::parse("ffffff");
+ Color [ 0, 0, 0, 1 ]
+> CSSColorParser::parse("hsla(900, 15%, 90%, 0.5)")
+ Color [ 226, 233, 233, 0.5 ]
+> CSSColorParser::parse("hsla(900, 15%, 90%)")
+ Color [ 0, 0, 0, 1 ]
+> CSSColorParser::parse("hsl(900, 15%, 90%)")
+ Color [ 226, 233, 233, 1 ]
+> CSSColorParser::parse("hsl(900, 0.15, 90%)") // NOTE: not spec compliant.
+ Color [ 226, 233, 233, 1 ]
+
+
+(c) Dean McNamee <dean@gmail.com>, 2012.
+(c) Konstantin Käfer <mail@kkaefer.com>, 2014.
+
+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.