Issue #238: provide a simpler installation process for devs
- download a snapshot of extracted data from Transvision server (updated every 6 hours)
- install Composer and install PHP dependencies
- launch php dev server
Merge pull request #249 from pascalchevrel/issue-238-data-snapshot-installation

Issue #238: provide a simpler installation process for devs
issue #217 : backout use of Dindent library has it has memory problems
Merge pull request #250 from pascalchevrel/master

issue #217 : backout use of Dindent library has it has memory problems