WIP framework can now report its version

- [ ] needs link to companion gem pull request

Find the motivation and details in the companion calabash-ios gem pull request.

Briefly, this PR provides several ways to find the calabash.framework:

#### Visual

```
$ tree calabash.framework
calabash.framework
├── Headers -> Versions/Current/Headers
├── Resources -> Versions/Current/Resources
├── Versions
│   ├── 0.9.169 -> A
│   ├── A
│   │   ├── Headers
│   │   │   ├── CalabashServer.h
│   │   │   ├── LPHTTPAsyncFileResponse.h
│   │   │   ├── LPHTTPDataResponse.h
│   │   │   ├── LPHTTPDynamicFileResponse.h
│   │   │   ├── LPHTTPFileResponse.h
│   │   │   ├── LPHTTPResponse.h
│   │   │   ├── LPRoute.h
│   │   │   ├── LPRouter.h
│   │   │   └── LPVersionRoute.h
│   │   ├── Resources
│   │   │   └── version
│   │   └── calabash
│   └── Current -> A
└── calabash -> Versions/Current/calabash
```

#### command line

```
$ calabash.framework/Resources/version => 0.9.169
```

#### extracted from the compiled binary

```
$ strings Briar-cal.app/Briar-cal | grep -E 'CALABASH VERSION' => CALABASH VERSION: 0.9.169
```