can't install on laravel 5.5

[KinG-InFeT]

run composer installation procedure and out this error

└─ $ ▶  composer require lightit/linkedin-share

                                                                                                                                           
  [InvalidArgumentException]                                                                                                               
  Could not find a version of package lightit/linkedin-share matching your minimum-stability (stable). Require it with an explicit versio  
  n constraint allowing its desired stability. 

[omidnazeri]

use below command:

composer require lightit/linkedin-share:dev-master