give the test apps consistent package.json names so nomnom can ignore them

test/node-modules-caching/package.json

 {
-  "name": "myapp",
+  "name": "node-buildpack-test-app",
   "version": "0.0.1",
-  "description": "It's a fake app",
+  "description": "node buildpack integration test app",
   "repository" : {
     "type" : "git",
     "url" : "http://github.com/example/example.git"
@@ -12,4 +12,4 @@
   "dependencies": {
     "express": "latest"
   }
-}
\ No newline at end of file
+}

test/package-json-invalidversion/package.json

 {
-  "name": "myapp",
+  "name": "node-buildpack-test-app",
   "version": "0.0.1",
-  "description": "It's a fake app",
+  "description": "node buildpack integration test app",
   "repository" : {
     "type" : "git",
     "url" : "http://github.com/example/example.git"

test/package-json-noversion/package.json

 {
-  "name": "myapp",
+  "name": "node-buildpack-test-app",
   "version": "0.0.1",
-  "description": "It's a fake app with no engine specified",
+  "description": "node buildpack integration test app",
   "repository" : {
     "type" : "git",
     "url" : "http://github.com/example/example.git"

test/package-json-stable-version/package.json

 {
-  "name": "myapp",
+  "name": "node-buildpack-test-app",
   "version": "0.0.1",
-  "description": "It's a fake app",
+  "description": "node buildpack integration test app",
   "repository" : {
     "type" : "git",
     "url" : "http://github.com/example/example.git"

test/package-json-unstable-version/package.json

 {
-  "name": "myapp-using-unstable-node",
+  "name": "node-buildpack-test-app",
   "version": "0.0.1",
-  "description": "It's a fake app",
+  "description": "node buildpack integration test app",
   "repository" : {
     "type" : "git",
     "url" : "http://github.com/example/example.git"