Install:
$sudo gem install cocoapods
$pod setup
$pod list
$pod search AFN

In Repo:
$touch Podfile
$open -e Podfile

Podfile:
platform:ios
pod ‘AFNetworking’, ‘0.9.1’

After saved Podfile:
$pod install

Note:
open xcworkspace
Adding Extra pods:
Add extra line in the Podfile-
pod ‘SSToolkit’
pod ‘ConciseKit’

After saved the Podfile
$pod install

TRY:
pod try BLCategory