Merge pull request #32 from zhenyun/master

Added /proc/vmstat metric;  added license info for httpdownload
quick fix for metric.py error
Add support for real time metric in GC
Bugfix for Issue#44
Bugfix for Reporting Issue#42
Add SAR-swapping to sar_metric, Fix Issue #44 correctly
Reporting Enhancements: Graphs sorted by name, Dropdown series sorted by name
Added Tooltip to Report Navigation Items to better handle long section names
jinja2 in requirements.txt
Bug fix for #45, sar device was not appearing in the stats.csv
Merge pull request #43 from RiteshMaheshwari/master

Bug fix for metric.py error, sar-device error and addtion in requirements.txt
Merge with latest linkedin/naarad
Merge pull request #46 from SharadGandhi/master

GC Enhancement, SAR Metric BugFix, Reporting Bugfix + Enhancement
Report Resources are now stored in sub directory
Syncing with latest linkedin/naarad
Bugfix: JmeterMetric: Update graph_data call
Support aggregation_timestamp from configuration
Merge branch 'master' of github.com:SharadGandhi/naarad
Merge pull request #52 from SharadGandhi/master

Report enhancement to store resources in report sub-directory
supporting ts_start and ts_end in /proc metrics