First cut at parallel runner
fixed merge conflicts
Updated with Concordion changes since original branch
updated README
Modified to use standard concordion:run command rather than
concordion:prun.
Refactored to use Guava's FutureListener.
Resolved thread starvation issue.
Introduced new interface for RunnerStrategy, and constructed specific RunnerStrategy in ConcordionBuilder.
Synchronised output of spec name and results.
Merged concordion-parallel with concordion
Remove unused files
Merge pull request #8 from nigelcharman/parallel

Parallel
Modified system properties.
Added logging.
Updated README.
Merged ParallelTestCompletionBlocker into ParallelRunStrategy.
Renamed Serial to Sequential.
Tidied up ParallelRunStrategy
removed unused interface Context.java
Updated README
Merge pull request #9 from nigelcharman/parallel

More Parallel changes
Updated README and moved TODOs to Github issues
reverted specs to not use concordion:run
First cut of ParallelRunStrategyTest, and refactored ParallelRunStrategy
removed unused imports
additional documentation
Merge pull request #81 from nigelcharman/master

Implement parallel runner for concordion:run commands