updating readme: adding overview notes
Merge pull request #16 from dz1111/DataAggregation

Data Aggregation Phase 3
adding existing intervals in prep for aggregating new intervals
fixing testing assert
adding unaggregated interval endpoints
refining/correcting unaggregated endpoints
adding unaggregated data count
added ability to compare unaggregated vs aggregated endpoints; still need to adapt it to automatic aggregation
revised aggregated vs unaggregated comparison
adjusting month start and ends so that end will be at 23:59:59
adding note about discrepancy in split dates
fixed missing dates in split dates by starting from day 01 for the month
fixed endpoint during aggregate new data such that the time is included
fixed insert formatting; other misc adjustments
Merge pull request #17 from dz1111/DataAggregation

Data Aggregation Phase 4: Aggregation for unaggregated time ranges works. Next step is to enable scheduling and notifications.
confirming connection to testing db
removing deprecated items replaced by MSGDataAggregator
Bug fixes to the SCADA Voltage & Tap script
updating readings/meter counts plot
adding new reading meter count plot