Documentation Examples for Functions

[lcombs]

It could be useful to add examples to the following functions:

• snippets_make() & snippets_clean() (could be from README)
• pairs_gold_make() & pairs_regular_make()
• pairs_gold_browse() & pairs_regular_browse()
• covars_make()

*Note: I tried to go through the documentation for all the functions, but this may not be an exhaustive list!