Make instructions for manual VS path more accurate

Move the line number for the variable close to the actual current location.
Add a note to not to include unescaped backward slashes as they would appear in normal Windows paths.
Upgrade to atom-shell@0.12.5
Upgrade to language-go@0.12.0
Add missing parens on indent guide check

Previously the indent guide was always showing on the whitespace only lines

Closes #2274
Prepare 0.97.0 release
Merge pull request #2290 from varesa/master

Make instructions for manual VS path more accurate