Remove deprecated BaseMatcherHelpers.

- Remove nonfunctional loading specs.

Current spec status:
- 2.0: 182 examples, 0 failures in 0.07765 seconds.
- 2.1: 205 examples, 0 failures in 0.07474 seconds.
Implement Examples::RSpecMatcherExamples.

Current spec status:
- 2.0: 190 examples, 0 failures in 0.24874 seconds.
- 2.1: 213 examples, 0 failures in 0.08868 seconds.
Update HaveErrorMessage specs.

- Add #with fluent method as an alias for #with_messages.

Current spec status:
- 2.0: 200 examples, 0 failures in 0.07935 seconds.
- 2.1: 223 examples, 0 failures in 0.07527 seconds.
Update BeKindOfMatcher specs.

Current spec status:
- 2.0: 206 examples, 0 failures in 0.07948 seconds.
- 2.1: 229 examples, 0 failures in 0.07311 seconds.
Implement Configuration via RSpec.configuration.

Current spec status:
- 2.0: 225 examples, 0 failures in 0.08864 seconds.
- 2.1: 248 examples, 0 failures in 0.08071 seconds.
Update IncludeMatcher specs.

Current spec status:
- 2.0: 244 examples, 0 failures in 0.08971 seconds.
- 2.1: 267 examples, 0 failures in 0.08553 seconds.
Update RespondTo specs.

Current spec status:
- 2.0: 281 examples, 0 failures in 0.10257 seconds.
- 2.1: 329 examples, 0 failures in 0.09188 seconds.
Update BeBoolean specs.

Current spec status:
- 2.0: 289 examples, 0 failures in 0.09747 seconds.
- 2.1: 337 examples, 0 failures in 0.09341 seconds.
Update Construct specs.

Current spec status:
- 2.0: 317 examples, 0 failures in 0.08988 seconds.
- 2.1: 383 examples, 0 failures in 0.10212 seconds.
Allow RespondTo to match private methods.

Current spec status:
- 2.0: 330 examples, 0 failures in 0.09463 seconds.
- 2.1: 396 examples, 0 failures in 0.10945 seconds.
Update HaveReader specs.

- Add :with_value alias for :with.
- Add support for composable matchers.

Current spec status:
- 2.0: 346 examples, 0 failures in 0.09891 seconds.
- 2.1: 412 examples, 0 failures in 0.10938 seconds.
Update HaveWriter specs.

- Remove the functionality checking the value of `:property` after
`:property=` has been invoked.

Current spec status:
- 2.0: 346 examples, 0 failures in 0.10908 seconds.
- 2.1: 412 examples, 0 failures in 0.10846 seconds.
Update HaveProperty specs.

Current spec status:
- 2.0: 370 examples, 0 failures in 0.10616 seconds.
- 2.1: 436 examples, 0 failures in 0.11945 seconds.
Remove deprecated meta matchers.

Current spec status:
- 2.0: 334 examples, 0 failures in 0.11034 seconds.
- 2.1: 400 examples, 0 failures in 0.10556 seconds.
Merge pull request #4 from sleepingkingstudios/refactor-specs

Refactor specs to remove meta matchers.