Remove old pictures

Remove sysimage docs

Merge pull request julia-vscode#74 from MariusDrulea/master

Documentation for fast debugging

Merge pull request julia-vscode#74 from MariusDrulea/master

Documentation for fast debugging

profiler docs

profiler docs

Merge pull request julia-vscode#54 from JeffFessler/patch-1

Settings are under "Code" not "File"

table viewer/linting docs

faq section

Add link to contributing guide in readme