Remove some redundant legacy code
Allow use of the pulse library for highlighting inserted item.

The pulse library provides a mechanism for fading out the highlighting
on a region which looks pretty.  This patch adds a new variable
`browse-kill-ring-highlight-inserted-item-style' which selects between
the old default style (solid) and the new fade out style (pulse).

ChangeLog

	(browse-kill-ring-highlight-inserted-item-style) New variable, the
	style to use when highlighting newly inserted items.
	(browse-kill-ring-highlight-inserted) New function, highlights the
	newly inserted item in the required style, but only if
	highlighting is turned on.
	(browse-kill-ring-insert-and-highlight) Move highlighting code out
	into `browse-kill-ring-highlight-inserted'.
Merge pull request #25 from bbatsov/legacy

Remove some redundant legacy code
Added bbatsov's contributions to the ChangeLog
Allow the preview to be turned off.

Support for turning off the preview is currently broken, there's use of
browse-kill-ring-preview-overlay, and calls to
browse-kill-ring-preview-update.  This avoids the problem code when the
preview is turned off.
Use pulse as default for highlight-inserted-style.

Use the pulse style as the default for highlighting inserted items.
Some additional configuration details in README file.

Adds some additional configuration details to the README file.  Still
lots more that could (should) be added.  Importantly, the new `pulse`
highlighting mechanism is detailed.
Improve comment on highlight-inserted-item-style.

Expands the comment to mention where the pulse library comes from.
Change to a summary style ChangeLog message.

Switch to a summary style ChangLog message rather than a GNU style
ChangeLog.
Merge branch 'pulse' of github.com:T-J-Teru/browse-kill-ring into T-J-Teru-pulse
Merge branch 'T-J-Teru-pulse'
Update README.md

Add information about additional configuration variables.
Merge pull request #31 from T-J-Teru/more-readme

Add details on some configuration variables to README file.