Add npm5 git support

[intellix]

Wanted to use my update but you haven't released it yet so would be nice to just install it directly from your git without the need to publish (something I miss from bower) :)

You can install the latest like:

npm i github:intellix/sequelize-typescript#npm5-git-support 

[bilby91]

Hey @RobinBuschmann I think this is a better idea than the automatic release that we have been discussing.

npm docs state:

Git dependencies with prepare scripts will now have their devDependencies installed, and their prepare script executed as if under npm pack. 

We would be only affecting users that install via git. I like this idea @intellix !

[codecov-io]

Codecov Report

Merging #202 into master will not change coverage.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #202 +/- ## ======================================= Coverage 96.71% 96.71% ======================================= Files 115 115 Lines 1004 1004 Branches 129 129 ======================================= Hits 971 971 Misses 15 15 Partials 18 18

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[RobinBuschmann]

Looks good! Let's do it!