Ignore swap files in .gitignore
Add caveats
Add link to Brande's paper
Add math
Simplify signature
Add screenshots
Add input data
Add results and node illustrations
Add illustration for edge results
Add missing See alsos
Add exercises
Add warning about time
Add JNA GraphAnalyzer link
Fix alignment
Merge pull request #391 from agouge/ghp-st-ga-examples

Add examples for ST_GraphAnalysis