updated HOL to (1) move authentication steps from ex2 -> ex3 & (2) provide a better set of instructions on acquiring the tenantid for user's azure ad
masked out lab author's email from screenshots
updated HOL to (1) reference correct O365 tools in VS2013.4 & (2) updated screenshots to mask out author's email & tenant
Merge pull request #17 from andrewconnell/feature/O3651-5-labUpdate

O3651-5 lab update
Merge pull request #18 from andrewconnell/feature/O3653-1-labUpdate

O3653-1 lab update