added metric.metric_unit for plotting as the y-axis (e.g. MemFree (KB))
added sub_metric_unit and sub_metric_description
Fix client charting zoom issue
Merge pull request #79 from SharadGandhi/master

Fix client charting zoom issue
Read SLA and store them
Merge remote branch 'upstream/master'
Merge pull request #74 from zhenyun/master

added metric.metric_unit for plotting as the y-axis (e.g. MemFree (KB))
merging upstream
Checking SLAs and writing output to file
fixing merge conflict
sorted the list
Merge remote branch 'upstream/master'
sorted the list
Merge pull request #83 from zhenyun/master

only sorted the list. 
lgtm. merging
Adding eq/= rule support
Do not generate sla.csv if no slas
add min and max calculated stats
header update on sla.py
Moving sla checking to its own method
Moving calculate_stats and check_slas after calc