updated boilerplate based on iQvoc application template

... by painstakingly comparing existing infrastructure with that of a
newly generated application:

    $ bundle exec rails new sample -m .../lib/generators/app/template.rb
implemented basic term-to-entity resolution
implemented basic weighted results

data structure is preliminary and will likely change with more complex
test cases including multiple label/concept associations per match
implemented ranked results

pretty inefficient still, but that's okay for now
added README

oddly, the migration task has to be executed separately from the
database creation - otherwise it won't run the iQvoc core migrations
properly

that's probably related to this change:
https://github.com/innoq/iqvoc/commit/3d2473dbd77eaf43511c91544e1a6755656514a8
created similar terms controller and route

basic routing infrastructure, utilizing recent iQvoc enhancement:
https://github.com/innoq/iqvoc/compare/e93505dda6^...7450eed76f
added preliminary parameter handling
added spec for RDF results

not yet implemented, thus failing
attempted to create RDF serialization

this is very much preliminary and incomplete
upgraded iQvoc dependency
added debugging dependencies

* Zeus for faster application startup (particularly useful for testing)
* Pry & Hirb for interactive debugging
* Unicorn as server (proved to be the least problematic option)
* Cane for code quality

note that using Zeus appears to require more explicit dependency loading
revised RDF serialization

now more closely resembles iQvoc search results, using anchors for
individual results

using rdfs:label instead of skos:*Label because it simplifies the data
structure (no need to carry around labeling type) and the distinction is
irrelevant (possibly even harmful) in this context
ensured duplicate concepts are skipped in RDF serialization

a bit awkward, but effective
renamed test file, removed Spork

Spork is obsolete with Zeus
improved efficiency by combining database queries
improved efficiency of database queries through eager loading
ensured duplicate concept references are purged from results

avoids sdc:link duples in RDF serialization

implementation is quick & dirty; cf. inline comment

plus adjusted various unrelated comments