Merge branch 'release/0.1.16' into develop
Task items point to YARD documents.
Merge branch 'develop' of https://github.com/trema/paper-house into develop

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Coveralls doesn't support 1.8.7 anymore.
Add Ruby 1.8.7 to :portability rake target.
Fix warning.
test 1.8.7 first on `rake portability`.
Move executable example sources into examples/.
Move static-library example sources into examples/
Move shared-library example sources into examples/
Move Ruby extension example sources into examples/
Update *.feature files.
Refactor example/ file hierarchies.
Fix YARD URL.
Updated README.md
Version bump to 0.0.17.
Merge branch 'release/0.0.17'
Merge branch 'master' of https://github.com/trema/paper-house