Detect TypeScript references in Visual Studio

• 1 Add common _references.ts file with content:
  ///<reference path="../Scripts/typings/angularjs/angular.d.ts"/>
  
• 2 Add reference to _references.ts at the beginning of each *.ts file
  
• 3 ///<reference path="../_references.ts"/>
  

References

• http://typescript.codeplex.com/discussions/453886
• http://stackoverflow.com/questions/18786389/typescript-in-visual-studio-2012-not-compiling
• https://github.com/ngbp/ngbp/issues/99