Added clause base class as a parent of Where - query is innappropriate,
here.
Set where to extend clause instead of query, and implemented some
function prototypes.
Added abstract functions that all clauses should have - or/and operators
and groupings.
Restructuring the where clause to use nested arrays, allowing for a
comparator to connect multiple where condition.
Restructuring of how variables are stored in the query class.
This does not need to be pass by reference - it already is in PHP.
Using heredoc syntax for sql string.
Merge pull request #8 from npacker/Issue007

Using heredoc syntax for sql string.
Merge branch 'master' of https://github.com/npacker/RecipeApp.git into Issue003