Adding Orbitsoft module for Prebid 1.0

[Indra-sensei]

Type of change

• Bugfix
• Feature
• New bidder adapter
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Does this change affect user-facing APIs or examples documented on http://prebid.org?
• Other

Description of change

• test parameters for validating bids

{
  bidder: 'orbitsoft',
  params: {
    placementId: '142',
    requestUrl: 'https://orbitsoft.com/php/ads/hb.php' // Url to perform search request
  }
}

[mike-chowla]

No code issues.

Needs a doc update with:
prebid_1_0_supported : true