add unsuccessful tests for new models
add unsuccessful tests for new models

Fix url segment params on http request

Add Fiscal Entities model

add test for fiscal entity

add test for fiscal entity

Curiosity-Education/curiosity-v.1.0,Curiosity-Education/curiosity-v.1.0,conekta/conekta-php,Curiosity-Education/curiosity-v.1.0,andradedev/conekta-php