Merge branch 'master' of https://github.com/Azure-Samples/azure-cosmo…

…s-java-sql-api-samples

Merge pull request Azure-Samples#1 from Azure-Samples/groceryStoreExa…

…mpmle

In SampleGroceryStore changefeed triggers three core functionalities

Cosmetic fixes

Everything runs; added explanatory comments in SampleChangeFeedProces…

…sor Re: POJO vs JSON for inserting items

Example code will work (once some dependency issues are resolved.)

Modified README