Change name of default build type to "library"

.travis.yml

@@ -1,6 +1,7 @@
-language: d
+language: d
-
+
-script:
+script:
-  - dub test --build=unittest --config=unittest
+  - dub build --build=release --config=library
-  - dub build --build=release --config=quickstartExample
+  - dub test --build=unittest --config=unittest
-  - dub build --build=release --config=qualifiersExample
+  - dub build --build=release --config=quickstartExample
+  - dub build --build=release --config=qualifiersExample

dub.json

@@ -7,7 +7,7 @@
 	"license": "MIT",
 	"configurations": [
 		{
-			"name": "build",
+			"name": "library",
 			"targetType": "library"
 		},
 		{