Added acquisitions to the Company model

Added an Acquisition table and model.
Updated the parser to create Acquisition instances.
Merge pull request #54 from cloudspace/63462534_acquisitions

Added acquisitions to the Company model
Added founded_on field to the companies api response.
Merge pull request #57 from cloudspace/64830630_funded_on

Added founded_on field to the companies api response.
Added status field to the companies endpoint.
Merge pull request #56 from cloudspace/64734378_company_status

64734378 company status
Added acquisitions to the Company model

Added an Acquisition table and model.
Updated the parser to create Acquisition instances.
Updated the companies endpoint with acquired data.

Added the acquired_on and acquired_by_id fields to the endpoint.
Updated related tests including the big controler tests.
Merge pull request #55 from cloudspace/64235514_acquired_on_response

64235514 acquired on response
Merge pull request #58 from cloudspace/staging

Staging