Added Glossary to Developer-Guide
Merge branch 'master' of github.com:griddynamics/Behavior-Analytic-Starter-Kit

# By schinilov
# Via schinilov
* 'master' of github.com:griddynamics/Behavior-Analytic-Starter-Kit:
  Update Developer-Guide--Web-Store--Recommendation-Engine.md
  Update README.md