Added Time series Volume Visualizer and Time Series Fragment information to User Guide.
Corrected rst formatting from previous commit
Added picture for the Time series Fragmen section.
Corrected some typos and misplaced commas
Reduced maximum line length to 80 cols. Using sections instead of lists.
Changed time series volume visualizer image to .png
Revert "Changed time series volume visualizer image to .png"

This reverts commit e5730fcb8367c61a8fa4c96d6d65a4e85cec3710.
Minor correction
Merge pull request #3 from quiuquio/master

Time series volume and time series fragment visualizers documentation