add number limit to list.search. closes #35
add try-functions. closes #34
 update list.join example to work correctly
change example to have James age = 22 to demo multiple keys
Merge pull request #38 from timelyportfolio/0.3

 update list.join example to work correctly
refine
refine docs for list.join
merge all comparer functions. closes #39.
refine
return non-logical search result (#40)

`list.search.fun` now accepts results with more than one element and not necessarily logical vector.
fix (#40
Merge branch '0.3'

Conflicts:
	R/internal.R