Updated .gitignore to exclude nomenclature

Files generated by nomenclature have now been excluded with an updated
.gitignore.
Nomenclature preamble detects acronym list

The nomenclature package detects the acronym output file (from
`glossaries` package). If acroynms are detected, "`For a list of
acronyms, please consult page~\pageref{gl:acroymn}`" added.
Thesis example includes acroymns and nomenclature

The `MyThesis.tex` file now includes nomenclature and acroymn examples.
Usage will be included in an updated readme.
Acronyms and nomenclature added to README

Details of acronym and nomenclature support have now been added to the
README file.