made changes to the design of the timeline.
cleaned up the css.
last-child now resets box shadow instead of margin-right.
events now sit flush with the blue line.
there is now no gap at the end of the timeline.
removed unnessecary color and margin.
removed margin.
Merge pull request #37 from Precise-Pixels/timeline-enhancements

[READY] made changes to the design of the timeline.