Added LICENSE, README and TODO files

README.md

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+SharpHash v1.00
+===============
+
+Implements UNIX style to .NET Framework hashing algorithms, and some other hash/checksum algorithms purely in managed code.
+
+Copyright © 2015 Natalia Portillo <claunia@claunia.com>
+
+Uses code from other project, copyright and license in their respective source files.
+
+Usage
+=====
+
+SharpHash.exe <filename>
+
+Features
+========
+
+* Calculates MD5, RIPEMD160, SHA1, SHA2-256, SHA2-384 and SHA2-512 using .NET Framework classes.
+* Calculates CRC16-IBM (same as old archivers), CRC32-ANSI (same as Zip) and CRC64-ECMA (same as Xz) using entirely managed code, without static tables.
+* Calculates Adler-32, Fletcher-16 and Fletcher-32 using entirely managed code.
+* Calculates SpamSum (fuzzy hashing, from ssdeep), using entirely managed code manually converted from ssdeep's C source.
+* And if file (from magic) is found in path, uses it to get a format description, Apple CREATOR/TYPE OSType pair, MIME type and MIME encoding.
+
+To-Do
+=====
+
+See TODO file.