How to reveal dot files in finder?
A handy related shortcut to reveal files that begin with a . (dot) in Finder dialogs that popup from a File->Open action is:

Shift + Command + "." 


This toggles "." (dot) files to show/ hide without needing to restart Finder.

You can also define an alias to quickly toggle hidden files within Finder:

alias AllFilesTRUE='defaults write com.apple.finder AppleShowAllFiles TRUE; killall Finder'
alias AllFilesFALSE='defaults write com.apple.finder AppleShowAllFiles FALSE; killall Finder'