Created README

README.md

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 # crypttool
+This is my _little_ commandline tool which I wrote to learn Python. It performs various cryptographic and miscalleneous tasks.
+
+## Instructions
+1. Clone this repository.
+2. ´cd cryptool´
+3. ´chmod +x crypttool.py´
+4. ´./crypttool.py´
+----
+
+## Features:
+### ROT/Ceasar "Encryption"
+* Allows rotating strings by a given amount, aswell as 'bruteforcing an encrypted string (when asked, type all)
+
+### Hashing
+* Can hash files (absolute paths) or strings
+* Supports all algorithms from hashlib
+
+### Translation
+* Translate/convert strings between binary, decimal, octal, hex and ASCII
+
+### Base64 Encoder/Decoder
+* Guaranteed to work with strings and files (this is not a guarantee) 
+* Uses a regex to automatically detect b64 strings
+* Needs absolute Paths for files
+* __currently broken (atleast for files)__
+
+### String Reverser
+* .syas ti tahw seod
+
+### Fixed XOR
+*  XORs two hex strings
+
+### Single Byte XOR Bruteforce
+* Takes a file or a string
+* Tries to XOR decrypt with a key between 0 and 255, then returns the best matching results
+
+### XOR Repeating Key
+* I'm not sure anymore but I _think_ this doesn't work
+
+### Zero-Width Strings
+* Create binary-encoded zerowidth-strings to hide in your texts
+* Or find and decode them!