Missing some letters containing diacritics

Letter 'ľ' and 'Ľ' were missing
FIX: invalid email domain
Missing another letters containing diacritics

Letter 'ä' and 'Ä' were missing
Merge pull request #291 from cinan/patch-1

Fixing Internet provider for sk_SK locale
Add PHPUnit 4.0.* to require-dev
Add php_codesniffer and run before tests. run vendor PHPUnit, too
psr-2 fixes
Allow more recent versions of PHPUnit
added pt_pt phone number and tests
fixed namespace
Reorder documentation

* Move more common formatters first
* make it obvious that `realTest` outputs real text
* reduce the image formatters doc (the readme doesn't replace the phpDoc)
Merge pull request #273 from terite/psr2

Sniff PSR-2 as part of travis + fixes + PR 210
Fix test failing due to bad luck

Sometimes shit happens... The Romanian national identity card number
generator generated a non-exisiting date (02/29/98). Fixing the seed
solves the problem.
fixed phoneNumber returns both fixed and mobile numbers and updated tests
Added fileCopy to File provider to simulate file upload
Updated readme for fileCopy
Check if source and target directories exist and using Uuid provider
Readme corrections for File provider
Allowing empty parameters for File:file() provider
Removed phpDoc from readme