To install pg, might need to add environment variable

[scottcc]

Your milage may vary, but for me, attempting to run sudo bundle install --deployment --without development test mysql aws failed (see below). I had to run this command: sudo env ARCHFLAGS="-arch x86_64" gem install pg -v '0.15.1', then also this (which both succeeded): sudo env ARCHFLAGS="-arch x86_64" bundle install --deployment --without development test mysql aws

So, we might want to add that blurb in the README.md? Unless there's a better way to deal with it of course.

Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as root will break this application for all non-root users on this machine.
Fetching gem metadata from https://rubygems.org/........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
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with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
checking for pg_config... yes
Using config values from /usr/local/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for pg_config_manual.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
    --with-pg
    --without-pg
    --with-pg-dir
    --without-pg-dir
    --with-pg-include
    --without-pg-include=${pg-dir}/include
    --with-pg-lib
    --without-pg-lib=${pg-dir}/
    --with-pg-config
    --without-pg-config
    --with-pg_config
    --without-pg_config
    --with-pqlib
    --without-pqlib
    --with-libpqlib
    --without-libpqlib
    --with-ms/libpqlib
    --without-ms/libpqlib

Gem files will remain installed in /Users/git/gitlab/vendor/bundle/ruby/2.0.0/gems/pg-0.15.1 for inspection.
Results logged to /Users/git/gitlab/vendor/bundle/ruby/2.0.0/gems/pg-0.15.1/ext/gem_make.out
An error occurred while installing pg (0.15.1), and Bundler cannot continue.
Make sure that `gem install pg -v '0.15.1'` succeeds before bundling.

[CiTroNaK]

Please, could you make PR?

[scottcc]

I had started a branch with this work, but came across different errors which I think are very similar to #54 (or even exactly like it). So I didn't want to submit a partial fix which might make things worse.

[CiTroNaK]

I had no problem with PostgreSQL on OS X 10.10. Please open it if you find any other problems.