Added Description of expirationUnit option
Added Description of expirationUnit option

Added a description of how to use the expirationUnit option.

tlrobinson/angular-cookie,devsaik/angular-cookie,devsaik/angular-cookie,tlrobinson/angular-cookie,ivpusic/angular-cookie,ashish173/angular-cookie,ivpusic/angular-cookie,ashish173/angular-cookie