CX 0.7.1

[BigOokie]

Fixes #25

Changes:

• Update Skycoin-cx formular for release v0.7.1
• Updated Readme to document alternate process for testing formulas.

Does this change need to mentioned in CHANGELOG.md?

Yes - Included in PR

[BigOokie]

@olemis I have just raised this PR. I have tested it out of my development repo - based on the new process i documented in the readme. Once Travis has completed, assuming no issues, could you please review

[BigOokie]

@olemis appears the Travis build failed - but not certain its related to the changed I made.

Errors appear to be related to installing various packaged in Travis:

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
...
An error occurred while installing nokogiri (1.10.3), and Bundler
...
Error: failed to run /Users/travis/.gem/ruby/2.3.0/bin/bundle install! The command "brew audit $(brew --repo $TRAVIS_REPO_SLUG)/Formula/*.rb" exited with 1.

The below relates to the Skycoin-cx v0.7.1 changes - which appear to have been successful

8.98s$ brew install skycoin-cx
==> Installing skycoin-cx from skycoin/skycoin
==> Downloading https://github.com/skycoin/cx/releases/download/v0.7.1/cx-0.7.1-
==> Downloading from https://github-production-release-asset-2e65be.s3.amazonaws
######################################################################## 100.0%
🍺  /usr/local/Cellar/skycoin-cx/0.7.1: 3 files, 20.6MB, built in 5 seconds
Removing: /Users/travis/Library/Caches/Homebrew/skycoin-cx--0.7.0.zip... (12.6MB)
The command "brew install skycoin-cx" exited with 0.
1.19s$ brew unlink skycoin-cx
Unlinking /usr/local/Cellar/skycoin-cx/0.7.1... 1 symlinks removed
The command "brew unlink skycoin-cx" exited with 0.

Any ideas?

[BigOokie]

@olemis looks like its worked now. Travis is happy ;)

[BigOokie]

@olemis could you review again when you get a chance - thx.

[BigOokie]

@olemis could you review this one. I expect it should be good to go