Headings and pictures for week3 circuit anlaysis
Add capacitive circuit
Add cap images
Remove introduction link from README
Add example headings for 1,2,3
Add example 1 figure plus text
Add more slide breaks
Correction to lab 1 m-file
Add GitHub fork and clone instructions to README
Create README for Introduction
Circuits lecture ready
Merge master to website
Slides for week3 circuit analysis ready