Kicked the can down the road
Initial commit
Revised info
Finished first sections
Finished WHERE section
Revised all but last two sections
Added more to PostGIS section
First draft of postgis section
Cleaned up grammar
Updated images
Resized to 700px wide
Fixed grammar, disambiguated explanations
Removed project, putting into future lesson
Added map instead of screenshot, cleaned up text
Updates
Update lesson-1.md

added one line on order of operations
Update lesson-1.md

added another california
Update lesson-1.md

added direction to clear sql before starting new section
Made minor changes
Merge branch 'sqlCourse_lesson1' of https://github.com/CartoDB/academy into sqlCourse_lesson1