Separated Apache HTTP Client from core

[mhriemers]

See issue #130

[miciek]

Thanks @ipsq I think we should also update the README to include this change as well.

[pepegar]

Hey @ipsq ! this is awesome, thank you very much!

The error in the build is because I changed the release process in #151 and changed build.sbt. Can you update your PR with master as well?

After having the build passing, and updating the README I think we'll be able to merge :)

[mhriemers]

@miciek Updated the README. Let me know what you think.

@pepegar Build should be passing now.

[pepegar]

We need to make the docs project depend on apache as well... you can test that the docs project builds correctly with:

sbt docs/tut

[mhriemers]

Only just realized I was editing the wrong README. Build should pass.

[codecov]

Codecov Report

Merging #156 into master will decrease coverage by 2.57%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #156      +/-   ##
==========================================
- Coverage   69.76%   67.19%   -2.58%     
==========================================
  Files          22       21       -1     
  Lines         635      570      -65     
  Branches        9        2       -7     
==========================================
- Hits          443      383      -60     
+ Misses        192      187       -5

Impacted Files	Coverage Δ
...e/shared/src/main/scala/hammock/HttpResponse.scala	0% <0%> (-100%)	⬇️
core/shared/src/main/scala/hammock/Entity.scala	18.18% <0%> (-13.64%)	⬇️
core/shared/src/main/scala/hammock/Status.scala	98.55% <0%> (-0.73%)	⬇️

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[pepegar]

This is awesome @ipsq great job, thank you very much!