Update excelParser.js

Proposed fix for empty excel files hanging bug
Merge pull request #20 from nickcousyn/patch-1

Update excelParser.js
Change xpath for finding cells to more efficient version
Move deferred resolution on end to unzip stream to prevent premature ending
Merge pull request #23 from crispy1989/master

Make parsing large spreadsheets more efficient, and fix premature ending on some spreadsheets
Version bump
Rename file with non-printable name (causing npm to fail)
Merge pull request #24 from crispy1989/master

Rename file with non-printable name (causing npm to fail)
Version bump
Support for multiple t nodes in strings

Sometimes formatting (specially with japanese characters) separates text in multiple t nodes. Just "get" will result in only one node. Which works in many cases but breaks in some.
Ignore phonetic text nodes

Japanese Excel occasionally stores phonetics as well as the regular text in the xlsx sheet. Those nodes do not show up to a excel user so they can be ignored.
Merge pull request #25 from martinheidegger/patch-1

Support for multiple t nodes in strings
bump version
Remove xls keyword from package.json

Fixes https://github.com/trevordixon/excel.js/issues/15.
0.1.1. Clean up and add very basic tests.