Make zippackage and deploy work

[jbarnoud]

Make the zip package work.
Hopefully the deploy script works as well.

Before merging you should create an empty branch called "package" and update the secure variable in .travis.yml with the secured version of your github token.

[codecov]

Codecov Report

Merging #14 into master will increase coverage by 0.04%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #14      +/-   ##
==========================================
+ Coverage    85.5%   85.54%   +0.04%     
==========================================
  Files          26       27       +1     
  Lines        2200     2207       +7     
==========================================
+ Hits         1881     1888       +7     
  Misses        319      319

Impacted Files	Coverage Δ
martinize/utils.py	100% <100%> (ø)
martinize/core.py	91% <100%> (+0.03%)	⬆️

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