Use src/test/accurest as default directory for contracts (#227)

accurest-gradle-plugin/src/main/groovy/io/codearte/accurest/plugin/AccurestGradlePlugin.groovy

@@ -47,7 +47,7 @@ class AccurestGradlePlugin implements Plugin<Project> {
 	void setConfigurationDefaults(AccurestConfigProperties extension) {
 		extension.with {
 			generatedTestSourcesDir = project.file("${project.buildDir}/generated-test-sources/accurest")
-			contractsDslDir = project.file("${project.rootDir}/src/test/resources/stubs") //TODO: Use sourceset
+			contractsDslDir = project.file("${project.rootDir}/src/test/accurest") //TODO: Use sourceset
 			basePackageForTests = 'io.codearte.accurest.tests'
 		}
 	}