lowercase local functions

Functions starting with a capital are meant for export.
source env.sh.custom first
update to v0.2 of gosh
log and exit with 0 code for INT,TERM,QUIT signals

only configuration and zmq failures will exit with 1 code

fixes formwork-io/greenline#1
Merge pull request #3 from abargnesi/signal_issue_1

log and exit with 0 code for INT,TERM,QUIT signals
guard uname -m NOT x86_64 in uploads
rename to asciidoc; format greenline as heading
Merge pull request #4 from abargnesi/ascii_doc

rename to asciidoc; format greenline as heading
support config of multiple rails via ENV or TOML

factors configuration reading into separate file within same package

uses TOML array syntax to capture rails

environment variable names are noted with zero-based array index (i.e.
GL_RAIL_0_NAME, GL_RAIL_1_NAME, etc.)

updated README to include usage
Merge pull request #5 from abargnesi/configuration_options

support config of multiple rails via ENV or TOML
fix up title
Merge branch 'experimental'

Conflicts:
	env.sh