Drupal 7 commerce stripe stripe-php library refuse to load
Finally found the solution.
There is wrong information about installing library on drupal dot org.
It says

Installation
Install and activate Commerce Stripe and Libraries modules.
Download the latest Stripe PHP release from GitHub.
Extract the contents of the archive into the directory /sites/all/libraries/stripe-php
Create an account at Stripe.com, and insert your API keys from the Stripe
Dashboard into the Commerce Stripe payment method settings at admin/commerce/config/payment-methods.

So the thing is that this is the wrong information. If you go to commerce_stripe.module and find hook commerce_stripe_libraries_info() in 'version arguments' you will see that it tries to locate in file VERSION this pattern:
'pattern' =&gt; '/(3.\d+(\.\d+)?)/',
It means that you need version 3 of stripe-php library(depends on your commerce_stripe module version).
So fix for this is to use correct version of stripe-php library
UPDATE
You can check necessary library's status by executing drush library-list
you will see something like this:
Name                   Status        Version  Variants          Dependencies  Provider        
stripe-php             Not detected           -                 -             Commerce Stripe 

if stripe-php library's status is not detected, then you user wrong version or place the library to the wrong place.