Update README.md
Update README.md
Update .gitignore
Merge pull request #56 from cordoval/patch-1

Update README.md
Update .gitignore
Merge pull request #57 from cordoval/patch-2

Update .gitignore
Updating cURL command line example.
Starting clean slate for 3.0.
Using MIT license again.
Ignoring temporary files.
Adding Composer configuration.
Adding PHPUnit configuration.
Ignoring code coverage report.
Adding current configuration definition. (incomplete)
Adding Travis-CI configuration.
Adding contribution guide.
Adding binary to sources and basic configuration options.
Removing redundant value.
Adding git tree.
Adding symfony/process.