Location & JSON output

[jbboehr]

I thought it might be nice to:

• output the file containing the missing translation
• support JSON output

I've prototyped this funtionality here, if you're interested: jbboehr#2

It currently doesn't handle keys found via findInArray, only via templates.

Path formatting is still off.

Sample output:

barbat
        in sample2.blade.php
foobar
        in sample.blade.php
        in sample2.blade.php
global_key
messages.namespaced_key

{
    "key": "barbat",
    "locations": [
        "sample2.blade.php"
    ]
}
{
    "key": "foobar",
    "locations": [
        "sample.blade.php",
        "sample2.blade.php"
    ]
}
{
    "key": "global_key",
    "locations": []
}
{
    "key": "messages.namespaced_key",
    "locations": []
}