Update CocaPods and motion-cocoapods

Because old CocaPods and motion-cocoapods can't install the libraries which are used in motion-prime.

```
$ bundle exec rake pod:install
....
Analyzing dependencies
[!] The version of CocoaPods used to generate the lockfile (0.35.0) is higher than the version of the current executable (0.34.4). Incompatibility issues may arise.
Pre-downloading: `SVPullToRefresh` from `https://github.com/droidlabs/SVPullToRefresh.git`
Downloading dependencies
Installing AFNetworking (2.4.1)
Installing MBAlertView (1.1.0)
Installing MBProgressHUD (0.9)
Installing NanoStore (2.7.7)
Installing SDWebImage (3.7.1)
Installing SVPullToRefresh (0.4.1)
Generating Pods project
rake aborted!
Errno::ENOENT: No such file or directory @ rb_sysopen - vendor/Pods/Pods-resources.sh

Tasks: TOP => pod:install
(See full trace by running task with --trace)
```