Updates to support AWS EB as at 2014-05-16

This is confirmed as working, thought there may be an argument for using the environment variable $EB_CONFIG_APP_SUPPORT for /var/app/containerfiles ?
Unfortunately that directory isn't in an ENV Variable.

```
AWS_ACCESS_KEY_ID =>
EB_CONFIG_SYSTEM_AWSEBAGENTID =>
PARAM1 =>
GEM_PATH =>
_ORIGINAL_GEM_PATH =>
AWS_SECRET_KEY =>
PARAM3 =>
EB_CONFIG_SYSTEM_AWSEBREFERRERID =>
PARAM4 =>
PARAM5 =>
PARAM2 =>
LESS_TERMCAP_mb =>
LESS_TERMCAP_md =>
LESS_TERMCAP_us =>
LESS_TERMCAP_se =>
LESS_TERMCAP_me =>
LESS_TERMCAP_ue =>
RUBYOPT => -I/usr/local/share/ruby/gems/2.0/gems/bundler-1.3.5/lib -rbundler/setup
SHELL => /bin/bash
SSH_TTY => /dev/pts/0
OLDPWD => /home/ec2-user
HOME => /home/ec2-user
AWS_PATH => /opt/aws
EC2_AMITOOL_HOME => /opt/aws/amitools/ec2
AWS_AUTO_SCALING_HOME => /opt/aws/apitools/as
EC2_HOME => /opt/aws/apitools/ec2
AWS_ELB_HOME => /opt/aws/apitools/elb
AWS_IAM_HOME => /opt/aws/apitools/iam
AWS_CLOUDWATCH_HOME => /opt/aws/apitools/mon
AWS_RDS_HOME => /opt/aws/apitools/rds
EB_ROOT => /opt/elasticbeanstalk
EB_CONFIG_SOURCE_BUNDLE => /opt/elasticbeanstalk/deploy/appsource/source_bundle
EB_CONFIG_FILE => /opt/elasticbeanstalk/deploy/configuration/containerconfiguration
JAVA_HOME => /usr/lib/jvm/jre
_ => /usr/local/bin/bundle
BUNDLE_BIN_PATH => /usr/local/share/ruby/gems/2.0/gems/bundler-1.3.5/bin/bundle
EB_CONFIG_APP_BASE => /var/app
EB_CONFIG_APP_SUPPORT => /var/app/containerfiles
EB_CONFIG_APP_ASSETS => /var/app/containerfiles/assets
EB_CONFIG_APP_LOGS => /var/app/containerfiles/logs
EB_CONFIG_APP_PIDS => /var/app/containerfiles/pids
EB_CONFIG_APP_CURRENT => /var/app/current
PWD => /var/app/current
BUNDLE_GEMFILE => /var/app/current/Gemfile
GEM_HOME => /var/app/current/vendor/bundle/ruby/2.0
PATH => /var/app/current/vendor/bundle/ruby/2.0/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/aws/bin:/home/ec2-user/bin
EB_CONFIG_APP_ONDECK => /var/app/ondeck
MAIL => /var/spool/mail/ec2-user
SHLVL => 1
HISTSIZE => 1000
SSH_CONNECTION => 121.44.135.239 54221 172.31.10.40 22
SSH_CLIENT => 121.44.135.239 54221 22
RUBY_VERSION => 2.00
COLUMNS => 204
LINES => 48
EB_CONFIG_HTTP_PORT => 80
USER => ec2-user
LOGNAME => ec2-user
LANG => en_AU.UTF-8
S3_BUCKET_NAME => energylink-staging
EB_CONFIG_SYSTEM_LOGPUBLICATIONCONTROL => false
RAILS_SKIP_MIGRATIONS => false
RAILS_SKIP_ASSET_COMPILATION => false
HISTCONTROL => ignoredups
LS_COLORS => rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg=01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36:
BUNDLE_WITHOUT => test:development
EB_CONFIG_APP_USER => webapp
TERM => xterm
LESSOPEN => |/usr/bin/lesspipe.sh %s
```

That's the ENV variables available. Could do some munging with the $EB_CONFIG_APP_SUPPORT though?