Update Full_Setup_Early2021.md

Update Full_Setup_Early2021.md

Create Full_Setup_Early2021.md

Update 4b_Generating_PHP_Docker_Images.md

Update 1d_Useful_Commands.md

Update 3a_Changing_Elasticsearch_Version.md

Update 1c_Full_Install_Instructions.md

Update 1d_Useful_Commands.md

Update 1b_Setup_And_Configuration.md

Update 1a_Resources_Links.md

Delete test.md

Update README.md

Update 1a_Resources_Links.md

Renamed lesson to lab

Fixes typo