Handle -pkg.el files without :url/:version properties etc.

Fixes #1620, references #1619
add recipe for org-link-travis
Merge pull request #1621 from aki2o/org-link-travis

add recipe for org-link-travis
Add recipe for ducpel
Merge pull request #1622 from alezost/ducpel-recipe

Add recipe for ducpel
added ipretty recipe
add recipe for guide-key-tip
Clarify README section mentioning package-filter.el
More concise usage section in README (see #1624)
Don't assume that user is using init.el rather than .emacs
Merge pull request #1623 from steckerhalter/ipretty

added ipretty recipe
Merge pull request #1625 from aki2o/guide-key-tip

add recipe for guide-key-tip
fix 'projmake-mode' recipe
Add turnip

https://github.com/kljohann/turnip.el
Add rainbow-identifiers.
Merge pull request #1626 from kljohann/turnip

Add turnip
Merge pull request #1627 from Fanael/master

Add rainbow-identifiers.
Added rcirc-alertify recipe
Add rails-log-mode recipe

Emacs Major mode for viewing Rails log files

https://github.com/ananthakumaran/rails-log-mode

I'm not affiliated with the package, but I had this response when I inquired about
submitting the recipe: https://github.com/ananthakumaran/rails-log-mode/issues/1
Merge pull request #1628 from fgallina/rcirc-alertify

Added rcirc-alertify recipe