Update README.md

Author: EkriirkE

README.md

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 # abx
 Decode Android Binary XML files (ABX)
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+Either pipe data in, or pass a filename.  Output can be redirected to a new file.  Various formatting options in the main script.
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+`# python3 abx.py binary.xml > normal.xml`
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+I saw a few utilities that required whole packages or java but I want neither of those.  So I whipped this up and it worked for me needs.  Some ABX>XML codes are not handled as I did not encounter them so I could not verify any translation accuracy