Added support for RSpec

The first language customization.

Add Linux key bindings

@RomFouq provided default Linux key bindings:

• ctrl-r: Goto File Symbol
• ctrl-shift-r: Goto Project Symbol
• ctrl-alt-down: Goto Declaration

Added Auto Scroll Option

The Goto File Symbol now scrolls the selected symbol into view in the editor. Pressing Esc will cancel the command and restore the screen to its original position.

This new feature can be disabled by unchecking the Auto Scroll option.

Fix: Directories ignored when building index

A recent change to ignore files with unknown grammars was accidentally applied to directories. This caused files in subdirectories to not be included in project symbols.

1.1.0: More Ignored Names

Added More Ignored Names setting to help speed up indexing. This is a list of names, including filename wildcards (globs), to be excluded from search. This is applied to directories also.

Also added Log To Console to help troubleshoot index issues.