Rename gradle subprojects name to match the directories name. (#298)

* Rename gradle subprojects name to match the directories name. Change the api jar name to match the maven artifact. Update gradle projects name in travis.
diff --git a/settings.gradle b/settings.gradle
index d06d25b..5b0bb48 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,23 +1,23 @@
 rootProject.name = "instrumentation-java"
-include ":instrumentation-java-all"
-include ":instrumentation-java-core"
-include ":instrumentation-java-core-impl"
-include ":instrumentation-java-core-impl-java"
-include ":instrumentation-java-core-impl-android"
+include ":all"
+include ":core"
+include ":core_impl"
+include ":core_impl_java"
+include ":core_impl_android"
 include ":shared"
 
-project(':instrumentation-java-all').projectDir = "$rootDir/all" as File
-project(':instrumentation-java-core').projectDir = "$rootDir/core" as File
-project(':instrumentation-java-core-impl').projectDir = "$rootDir/core_impl" as File
-project(':instrumentation-java-core-impl-java').projectDir = "$rootDir/core_impl_java" as File
-project(':instrumentation-java-core-impl-android').projectDir = "$rootDir/core_impl_android" as File
+project(':all').projectDir = "$rootDir/all" as File
+project(':core').projectDir = "$rootDir/core" as File
+project(':core_impl').projectDir = "$rootDir/core_impl" as File
+project(':core_impl_java').projectDir = "$rootDir/core_impl_java" as File
+project(':core_impl_android').projectDir = "$rootDir/core_impl_android" as File
 project(':shared').projectDir = "$rootDir/shared" as File
 
 // Java8 projects only
 if (JavaVersion.current().isJava8Compatible()) {
-    include ":instrumentation-examples"
-    include ":instrumentation-java-benchmarks"
+    include ":examples"
+    include ":benchmarks"
 
-    project(':instrumentation-examples').projectDir = "$rootDir/examples" as File
-    project(':instrumentation-java-benchmarks').projectDir = "$rootDir/benchmarks" as File
+    project(':examples').projectDir = "$rootDir/examples" as File
+    project(':benchmarks').projectDir = "$rootDir/benchmarks" as File
 }