#1 Add dynamic download

[uilianries]

closes #1

[codecov-io]

Codecov Report

Merging #28 into master will decrease coverage by 0.17%.
The diff coverage is 92.85%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
- Coverage   95.09%   94.91%   -0.18%     
==========================================
  Files           4        4              
  Lines         163      177      +14     
==========================================
+ Hits          155      168      +13     
- Misses          8        9       +1

Impacted Files	Coverage Δ
bintray/bintray.py	96.29% <92.85%> (-0.52%)	⬇️

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