Creating the TSVToElasticSearch class

Creates the first attempt to implement a scala class to convert
.tsv extension files into JSON bulks to be further processed by the
ElasticSearch API.

Adds various function to process Surface Forms, Pairs, Tokens and
URIs.
  Adds the function parseTokenCounts(aLine: String)
    - This function takes a line from a Pig output format file (e. g.
    <URL_1 {(TOKEN_1,value)}>) and generates a context string from
    it.

  Adds the function parsePairCounts(aLine: String)
    - This function takes a line from a Pig output format file (e. g.
    <SurfaceForm, URL, value>) and generates a tuple with three
    strings representing (URI, SF_TYPE, Encoded String)

  Adds the function parseUriCounts(aLine: String)
    - This function takes a line from a Pig output format file (e. g.
    <URI, Frequency of URI>) and generates a tuple with three strings
    representing (URI, URI_COUNT, Frequency)

  Adds the function parseSfCounts(aLine: String)
    - This function takes a line from a .tsv output file (e. g.
    <OccId, URI, SurfaceForm, Text, Offset>) and generates a tuple
    with three strings representing (URI, SF_TYPE, Encoded String>

  Adds the function toJson that builds the final JSON format string
  to be processed by the ElasticSearch API.