Added class EclipseState which currently holds a Schedule instance.
Added std::set<enum PhaseEnum> to keep track of phases present to the EclipseState.
Merge pull request #84 from joakim-hove/create-EclipseState

Create eclipse state
Added missing include statements
Fixed erroneous include statement path
fix JSON of the PVTO keyword

the magic word is "num_tables" and not "size". with the latter it only
parses the first record of the keyword. Stupid me!
add dimensions to PVTG
add class for simple tables

This is intended for keywords like SWOF which currently is a big
vector of doubles but one needs to use the data in a column oriented
way.

This class is intended to be used like this:

Opm::DeckKeywordConstPtr swofKeyword = newParserDeck->getKeyword("SWOF");
Opm::SimpleTable swofTable(swofKeyword,
                           /*columns=*/std::vector<std::string>{"SW", "KRW", "KROW", "PCOW"},
                           /*recordIdx=*/table_num);
const std::vector<double>& sw = swofTable.getColumn(0);
// ...

what might be useful is to move the column names into the JSON
description of the keywords, but I could not find a way to go back to
the parser from the deck/keyword. maybe this is not even desireable as
decks might also be created by other means...

Also, a multi-record variant of the class is available. That one is
intended for keywords like PVTO where the first few items of each
record form a table (in the case of PVTO: Rs, pressure, Bo, and
viscosity for staturated oil) and the next entries constitute another
table (in the case of PVTO: pressure, Bo and viscosity for
undersaturated oil with the same RS factor as the first entry).

The second kind of tables can be constructed using the item-based
variant of SimpleTable.
add support for full-fledged tables
add utility classes for some common keywords

the idea is to create a lightweight wrapper objects around
DeckKeywords which allow more convenient and more readable access to
the data. E.g. instead of

  std::vector outerColumnNames{"RV", "P", "BG", "MUG"};
  std::vector innerColumnNames{"P", "BG", "MUG"};
  Opm::FullTable pvtgTable(deck->getKeyword("PVTG"),
                           outerColumnNames, innerColumnNames);
  pvtgTable->getOuterTable()->getColumn(1);

one now better uses

  Opm::PvtgTable pvtgTable(deck->getKeyword("PVTG"));
  pvtgTable->getOuterTable()->getPressureColumn();

the idea for the other keywords is similar.
remove the emacs and vim modelines

as it was decided that having editor-specific stuff in files is not
wanted in OPM. for emacs, a .dir-locals.el file is added to the
module's root directory which should have the same effect.