New README

[lorenzwalthert]

Closes #32. @krlmlr do you want to have a look? You can have a preview available on my fork.

[codecov-io]

Codecov Report

Merging #413 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #413   +/-   ##
======================================
  Coverage    91.8%   91.8%           
======================================
  Files          34      34           
  Lines        1550    1550           
======================================
  Hits         1423    1423           
  Misses        127     127

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[krlmlr]

Thanks. Looks good, I like it!

[lorenzwalthert]

Here we go. 🎉