[UI spec] Make `tap` work with `UISwitch`.
[UI spec] Add failing test for `flick` and direction.

Related to http://hipbyte.myjetbrains.com/youtrack/issue/RM-439
[iOS] Fail build if one of the resources is a dir called `Resources'.

Fixes http://hipbyte.myjetbrains.com/youtrack/issue/RM-450.
fix build error if resource directory does not exits

This bug is introduced by 064672443dc1ff3d8920023f51e46d73f90bbec1

% motion create hello && cd hello
% rm -rf resources
% rake
rake aborted!
No such file or directory @ dir_initialize - ./resources
/Library/RubyMotion/lib/motion/project/template/ios.rb:51:in `open'
/Library/RubyMotion/lib/motion/project/template/ios.rb:51:in `entries'
/Library/RubyMotion/lib/motion/project/template/ios.rb:51:in `block in pre_build_actions'
/Library/RubyMotion/lib/motion/project/template/ios.rb:50:in `each'
/Library/RubyMotion/lib/motion/project/template/ios.rb:50:in `pre_build_actions'
/Library/RubyMotion/lib/motion/project/template/ios.rb:66:in `block (2 levels) in <top (required)>'
/Library/RubyMotion/lib/motion/project/template/ios.rb:121:in `block in <top (required)>'
Tasks: TOP => build:simulator
(See full trace by running task with --trace)
fix a bug where nested array cannot be handled

it cause an error If app.resources_dirs has nested array

  app.resources_dirs << ['Images']

```
% rake
rake aborted!
no implicit conversion of Array into String
/Library/RubyMotion/lib/motion/project/template/ios.rb:51:in `exists?'
/Library/RubyMotion/lib/motion/project/template/ios.rb:51:in `block in pre_build_actions'
/Library/RubyMotion/lib/motion/project/template/ios.rb:50:in `each'
/Library/RubyMotion/lib/motion/project/template/ios.rb:50:in `pre_build_actions'
/Library/RubyMotion/lib/motion/project/template/ios.rb:67:in `block (2 levels) in <top (required)>'
/Library/RubyMotion/lib/motion/project/template/ios.rb:122:in `block in <top (required)>'
Tasks: TOP => build:simulator
(See full trace by running task with --trace)
```
fix a build error when “Resource” is contained as resource directory path

This should fix the following case which uses "HTBResources.bundle" as resource.

```
% rake
    ERROR! An iOS application cannot be installed if it contains a directory called `resources'. Please rename the directory at path `vendor/Pods/Resources/HTBResources.bundle' to, for instance, `vendor/Pods/Resources/assets'.
````
[bacon-ui] Get rid of a false positive warning.
2.25