0.8.1

Patches

• If the --port flag is not defined, list will try to use the PORT env variable: #17
• Use JSON for Travis config (instead of YAML): 39771b7
• Renamed project to "list" (the old one will still continue to work, therefore not breaking): 3a8f705
• Improved system description in the footer: 776f846
• Updated screenshot to match the new project name: 959a222