Add/cldr 36

[jblz]

I noticed that a new version of the data files had dropped: http://cldr.unicode.org/index/downloads/cldr-36

This picks up from #94 & brings in the new data files.

Additionally, this:

• Switches the data file script to use curl since it's included in mac os by default (wget is not)
• Includes instructions for running the unit tests in the README
• Uses mktemp to create temp directories
• ...

[jblz]

Lots of extra files in the data. Will see what that's about.

[jblz]

OK, I had forgotten to run the php prune-cldr-files.php script :)

Now the resultant data files are substantially fewer than before:

$ find data/29.0.0/ -type f | wc -l
     704
$ find data/36.0.0/ -type f | wc -l
     397

@stuwest -- any idea if that's intentional / expected?

---

The prune script output looks like this for v36:

php prune-cldr-files.php
wpcom locales -- 88
wporg locales -- 78
combined unique wp locales including English -- 149
combined CLDR JSON file locales -- 142
combined unique CLDR JSON file locales -- 98

CLDR locales deleted = 444
CLDR locales retained = 98
files pruned from retained CLDR locales = 686

WordPress locales without CLDR JSON file:
'su' -- found no match for CLDR file su
'oc' -- found no match for CLDR file oc
'mwl' -- found no match for CLDR file mwl
'mhr' -- found no match for CLDR file mhr
'azb' -- found no match for CLDR file azb
'haz' -- found no match for CLDR file haz
'oci' -- found no match for CLDR file oc

CLDR supplemental files deleted = 22
CLDR supplemental files retained = 4

Compared to master:

wpcom locales -- 88
wporg locales -- 78
combined unique wp locales including English -- 149
combined CLDR JSON file locales -- 141
combined unique CLDR JSON file locales -- 97

CLDR locales deleted = 414
CLDR locales retained = 97
files pruned from retained CLDR locales = 459

WordPress locales without CLDR JSON file:
'su' -- found no match for CLDR file su
'oc' -- found no match for CLDR file oc
'mwl' -- found no match for CLDR file mwl
'mhr' -- found no match for CLDR file mhr
'azb' -- found no match for CLDR file azb
'ceb' -- found no match for CLDR file ceb
'haz' -- found no match for CLDR file haz
'oci' -- found no match for CLDR file oc