Multi-Process Build and Scan Fixes

Enhancements:

• Add support for running the beacon scanning service in a separate process and working with
  application setups that have more than one process. (#479, David G. Young)

Bug Fixes:

• Fix failure to stop scanning when unbinding from service or when the between scan period
  is nonzero. (#507, David G. Young)

To use this release, you must download the aar file below, and configure it with your project like so:

• Edit your innermost build.gradle file to add the beta library AAR as a dependency like so:

      dependencies {
        compile 'android-beacon-library:2.11-beta1@aar'
      }

• Create a /libs folder next to the build.gradle above, then download and copy the the android-beacon-library-2.11-beta1.aar file below into this folder.

• Configure your app's outermost build.gradle File to reference the /libs directory from above in a flatDir declaration:

      allprojects {
          repositories {
              jcenter()
              flatDir {
                  dirs 'libs'
              }
          }
      }