Fixed link to "What's Rocketeer"?

Missing s in the GitHub link added.

Signed-off-by: Alexander Kluth <contact@alexanderkluth.com>
Merge pull request #99 from deralex/develop

Fixed link to "What's Rocketeer"?
Update README.md
Switch to PSR4
Use templates in assertTaskHistory in tests
Introduce conditional in checkPhpVersion() for non-Laravel projects
Minor spelling fix
Merge pull request #117 from ts/master

Quick fix for now.
Tweak comment
Hash is now computed with the actual configuration
Split Bash into modules for easier handling
Get required PHP version from the composer.json file if possible
Close #124 - Scope current release cache to connection too
Update Bash tests to follow split classes
Close #123 - Use server time instead of local time to generate timestamp
Work on aborted releases
Display list of releases and state in current
Expand CONTRIBUTING.md for #122
Simpler Task::displayReleases
Default unknown releases to invalid