Add more tests involving spacing to GlobeCoordParserTest

This just makes sure that the Parser can accept
values with different ammounts of spacing in
different places
Merge pull request #4 from DataValues/extraGlobeCoordParserTests

Add more tests involving spacing to GlobeCoordParserTest
use --prefer-source for travis composer install
Also test php 5.6 and hhvm on travis
Merge pull request #7 from DataValues/travisPHPversions

Also test php 5.6 and hhvm on travis
use getcwd() instead of exec('pwd')
Remove legacy todo (we don't want to do that anymore)
Merge pull request #9 from DataValues/cleanup

Remove legacy todo (we don't want to do that anymore)
Document latlong vs. geocoordinate confusion
Document that globe can be null
Delete GeoCoordinateValue
Merge pull request #12 from DataValues/geocoord

Delete GeoCoordinateValue
Update README.md
Update phpunit.xml.dist
Merge pull request #11 from DataValues/globe-null

Document that precision can be null
Merge pull request #10 from DataValues/latlong-doc

Document latlong vs. geocoordinate confusion
More precise type hints
Avoid number
Add LatLongCalculator
Rename to GlobeMath