Adding wp_nav_menu theme locations

This will allow users to specify a specific menu to use in one of the predefined locations.

REF: http://codex.wordpress.org/Navigation_Menus#Display_Menus_on_Theme
Adding accessible skip to content link
Added ref link to cpt example
Bugfix - Corrected var naming in display thumbnail function
Removed duplicate left padding on lists
Updated Readme for better example of child theme usage
Merge branch 'wp-menu-locations' into v0.2.5
Updated max vers of devDeps
Created new constants and limited LiveReload to changes in the child theme
Pulled in master
Fixed theme location in header menu
Added edit link for user access
Updated main div to new html element
Updated main elem class hook to match other site containers
Added main elem to normalize
Fixed node_modules dir in gitignore
0.2.4