* Add ConfigAwarePlaceholders class
This allows placeholder values to be sourced from IConfiguration in
addition to set values.
* Rework how IPlaceholders is decorated in container
* copied everything from repos back to ocelot repo
* added src projects to sln
* removed all test projects that have no tests
* added all test projects to sln
* removed test not on master
* merged unit tests
* merged acceptance tests
* merged integration tests
* fixed namepaces
* build script creates packages for all projects
* updated docs to make sure no references to external repos that we will remove
* +semver: breaking
