Update ruby-rspec-expectations to 2.14.2

### 2.14.2 / 2013-08-14
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.14.1...v2.14.2)

Bug fixes

* Fix `be_<predicate>` matcher to not support operator chaining like the
  `be` matcher does (e.g. `be == 5`). This led to some odd behaviors
  since `be_<predicate> == anything` returned a `BeComparedTo` matcher
  and was thus always truthy. This was a consequence of the implementation
  (e.g. subclassing the basic `Be` matcher) and was not intended behavior.
  (Myron Marston).
* Fix `change` matcher to compare using `==` in addition to `===`. This
  is important for an expression like:
  `expect {}.to change { a.class }.from(ClassA).to(ClassB)` because
  `SomeClass === SomeClass` returns false. (Myron Marston)

### 2.14.1 / 2013-08-08
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.14.0...2.14.1)

Bug fixes

* Ensure diff output uses the same encoding as the encoding of
  the string being diff'd to prevent `Encoding::UndefinedConversionError`
  errors (Jon Rowe).

### 2.14.0 / 2013-07-06
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.14.0.rc1...v2.14.0)

Bug fixes

* Values that are not matchers use `#inspect`, rather than `#description` for
  documentation output (Andy Lindeman, Sam Phippen).
* Make `expect(a).to be_within(x).percent_of(y)` work with negative y
  (Katsuhiko Nishimra).
* Make the `be_predicate` matcher work as expected used with `expect{...}.to
  change...`  (Sam Phippen).

### 2.14.0.rc1 / 2013-05-27
[full changelog](http://github.com/rspec/rspec-expectations/compare/v2.13.0...v2.14.0.rc1)

Enhancements

* Enhance `yield_control` so that you can specify an exact or relative
  number of times: `expect { }.to yield_control.exactly(3).times`,
  `expect { }.to yield_control.at_least(2).times`, etc (Bartek
  Borkowski).
* Make the differ that is used when an expectation fails better handle arrays
  by splitting each element of the array onto its own line. (Sam Phippen)
* Accept duck-typed strings that respond to `:to_str` as expectation messages.
  (Toby Ovod-Everett)

Bug fixes

* Fix differ to not raise errors when dealing with differently-encoded
  strings (Jon Rowe).
* Fix `expect(something).to be_within(x).percent_of(y)` where x and y are both
  integers (Sam Phippen).
* Fix `have` matcher to handle the fact that on ruby 2.0,
  `Enumerator#size` may return nil (Kenta Murata).
* Fix `expect { raise s }.to raise_error(s)` where s is an error instance
  on ruby 2.0 (Sam Phippen).
* Fix `expect(object).to raise_error` passing. This now warns the user and
  fails the spec (tomykaira).

Deprecations

* Deprecate `expect { }.not_to raise_error(SpecificErrorClass)` or
  `expect { }.not_to raise_error("some specific message")`. Using
  these was prone to hiding failures as they would allow _any other
  error_ to pass. (Sam Phippen and David Chelimsky)

(taca)