Issue #34: Fixed minor spelling & grammar mistakes for clarity

[DevOpsJeremy]

This fixes minor spelling/grammar mistakes in the README in defined in this issue and has no effect on the functionality.

Line 5

Previous

There is no throttling mechanism and so all jobs are started immediately and are all run currently.

The intended word here is 'concurrently'. The distinction is important because concurrent operations is the purpose of this module.

Current

There is no throttling mechanism and so all jobs are started immediately and are all run concurrently.

Line 9

Previous

ThreadJob jobs will tend to run much faster because there is lower overhead and they do not use the remoting serialization system as BackgroundJob jobs do. And they will use up fewer system resources.

This snippet was reworded for clarity and to fix a minor issue with parallel structure.

Current

ThreadJob jobs will tend to run much faster because there is lower overhead and they do not use the remoting serialization system as BackgroundJob jobs do. Additionally, they consume fewer system resources.