Add LICENSE and data to sdist

[jayvdb]

Also remove executable bit from text files.

Fixes #2

[codecov-io]

Codecov Report

Merging #3 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master       #3   +/-   ##
=======================================
  Coverage   76.23%   76.23%           
=======================================
  Files           7        7           
  Lines         467      467           
=======================================
  Hits          356      356           
  Misses        111      111

Impacted Files	Coverage Δ
charset_normalizer/constant.py	100% <ø> (ø)	⬆️
charset_normalizer/cli/normalizer.py	0% <ø> (ø)	⬆️
charset_normalizer/__init__.py	100% <ø> (ø)	⬆️
charset_normalizer/normalizer.py	82.16% <ø> (ø)	⬆️
charset_normalizer/unicode.py	90.32% <ø> (ø)	⬆️
charset_normalizer/probe_chaos.py	99.06% <ø> (ø)	⬆️
charset_normalizer/probe_coherence.py	94.44% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update dbb3bdc...9a4f2a2. Read the comment docs.

[Ousret]

Thank you.