Added .idea and *.iml to .ignore

Initail commit git ignore

Updating arch diagrams for Java

Merge pull request #53 from aws-samples/java-faermanj

Review of Module 5

Review of Module 4

Review of module 3

Review of module 2

Narrative review of Module 2

Update README.md

Reviewed Introduction

adding stream processor code for module 5

adding module 5 files for java - streaming not complete yet

adding module 4 files for java

adding module 3 files for java