add readmes for all packages (#1495)

* add bigquery readme

* add all readmes

* copy readme as part of release script

* gcloud-node -> google-cloud-node

* fix youre good to gos

* add resource manager scope

* exclude unecessary files

packages/google-cloud-language/README.md

@@ -0,0 +1,123 @@
+# @google-cloud/language
+> Google Cloud Natural Language Client Library for Node.js
+
+> **This is a Beta release of Google Cloud Natural Language.** This feature is not covered by any SLA or deprecation policy and may be subject to backward-incompatible changes.
+
+*Looking for more Google APIs than just Natural Language? You might want to check out [`google-cloud`][google-cloud].*
+
+- [API Documentation][gcloud-language-docs]
+- [Official Documentation][cloud-language-docs]
+
+
+```sh
+$ npm install --save @google-cloud/language
+```
+```js
+var language = require('@google-cloud/language')({
+  projectId: 'grape-spaceship-123',
+  keyFilename: '/path/to/keyfile.json'
+});
+
+var language = language({
+  projectId: 'grape-spaceship-123',
+  keyFilename: '/path/to/keyfile.json'
+});
+
+// Get the entities from a sentence.
+language.detectEntities('Stephen of Michigan!', function(err, entities) {
+  // entities = {
+  //   people: ['Stephen'],
+  //   places: ['Michigan']
+  // }
+});
+
+// Create a document if you plan to run multiple detections.
+var document = language.document('Contributions welcome!');
+
+// Analyze the sentiment of the document.
+document.detectSentiment(function(err, sentiment) {
+  // sentiment = 100 // Large numbers represent more positive sentiments.
+});
+
+// Parse the syntax of the document.
+document.annotate(function(err, annotations) {
+  // annotations = {
+  //   language: 'en',
+  //   sentiment: 100,
+  //   entities: {},
+  //   sentences: ['Contributions welcome!'],
+  //   tokens: [
+  //     {
+  //       text: 'Contributions',
+  //       partOfSpeech: 'Noun (common and proper)',
+  //       partOfSpeechTag: 'NOUN'
+  //     },
+  //     {
+  //       text: 'welcome',
+  //       partOfSpeech: 'Verb (all tenses and modes)',
+  //       partOfSpeechTag: 'VERB'
+  //     },
+  //     {
+  //       text: '!',
+  //       partOfSpeech: 'Punctuation',
+  //       partOfSpeechTag: 'PUNCT'
+  //     }
+  //   ]
+  // }
+});
+```
+
+
+## Authentication
+
+It's incredibly easy to get authenticated and start using Google's APIs. You can set your credentials on a global basis as well as on a per-API basis. See each individual API section below to see how you can auth on a per-API-basis. This is useful if you want to use different accounts for different Google Cloud services.
+
+### On Google Compute Engine
+
+If you are running this client on Google Compute Engine, we handle authentication for you with no configuration. You just need to make sure that when you [set up the GCE instance][gce-how-to], you add the correct scopes for the APIs you want to access.
+
+``` js
+// Authenticating on a global basis.
+var projectId = process.env.GCLOUD_PROJECT; // E.g. 'grape-spaceship-123'
+
+var language = require('@google-cloud/language')({
+  projectId: projectId
+});
+
+// ...you're good to go!
+```
+
+### Elsewhere
+
+If you are not running this client on Google Compute Engine, you need a Google Developers service account. To create a service account:
+
+1. Visit the [Google Developers Console][dev-console].
+2. Create a new project or click on an existing project.
+3. Navigate to  **APIs & auth** > **APIs section** and turn on the following APIs (you may need to enable billing in order to use these services):
+  * Google Cloud Natural Language API
+4. Navigate to **APIs & auth** >  **Credentials** and then:
+  * If you want to use a new service account, click on **Create new Client ID** and select **Service account**. After the account is created, you will be prompted to download the JSON key file that the library uses to authenticate your requests.
+  * If you want to generate a new key for an existing service account, click on **Generate new JSON key** and download the JSON key file.
+
+``` js
+var projectId = process.env.GCLOUD_PROJECT; // E.g. 'grape-spaceship-123'
+
+var language = require('@google-cloud/language')({
+  projectId: projectId,
+
+  // The path to your key file:
+  keyFilename: '/path/to/keyfile.json'
+
+  // Or the contents of the key file:
+  credentials: require('./path/to/keyfile.json')
+});
+
+// ...you're good to go!
+```
+
+
+[google-cloud]: https://github.com/GoogleCloudPlatform/google-cloud-node/
+[gce-how-to]: https://cloud.google.com/compute/docs/authentication#using
+[dev-console]: https://console.developers.google.com/project
+[gcloud-language-docs]: https://googlecloudplatform.github.io/google-cloud-node/#/docs/language
+[cloud-language-docs]: https://cloud.google.com/natural-language/docs