Useful commands for SFDX in Visual Studio Code

1. To pull changed source from the scratch org to the project: 
• sfdx force:source:pull
2. To pull source to the project if a conflict has been detected: 
• sfdx force:source:pull --forceoverwrite
3. To push changed source to a scratch org that’s not the default, you can indicate it by its username or alias:
• sfdx force:source:push --targetusername test-b4agup43oxmu@example.com
• sfdx force:source:push -u test-b4agup43oxmu@example.com
• sfdx force:source:push -u MyGroovyScratchOrg