travis: Remove time consuming 'brew update' command 'brew update' was added as part of #83 to fix a glibtoolize error and failing OSX build. Travis now defaults to a more recent version of OSX containing the newer working version of glibtoolize.
travis: Remove time consuming 'brew update' command
'brew update' was added as part of #83 to fix a glibtoolize error and failing OSX build. Travis now defaults to a more recent version of OSX containing the newer working version of glibtoolize.

favioflamingo/picocoin,favioflamingo/picocoin