Added additional documentation and testing for PullRequest CRD.

cmd/pullrequest-init/README.md

@@ -8,14 +8,14 @@ provider specific payloads.
 
 Currently supported providers:
 
-* GitHub
+*   GitHub
 
 ## Generic pull request payload
 
-The payload generated by default aims to abstract the base features of any
-pull request provider. Since there is no one true spec for pull requests, not
-every feature may be available. The payload is output to `$PATH/pr.json` and 
-looks like:
+The payload generated by default aims to abstract the base features of any pull
+request provider. Since there is no one true spec for pull requests, not every
+feature may be available. The payload is output to `$PATH/pr.json` and looks
+like:
 
 ```json
 {
@@ -52,7 +52,11 @@ looks like:
 
 GitHub pull requests will output these additional files:
 
-* `$PATH/github/pr.json`: The raw GitHub payload as specified by
-   https://developer.github.com/v3/pulls/#get-a-single-pull-request
-* `$PATH/github/comments/#.json`: Comments associated to the PR as specified by
-   https://developer.github.com/v3/issues/comments/#get-a-single-comment
+*   `$PATH/github/pr.json`: The raw GitHub payload as specified by
+    https://developer.github.com/v3/pulls/#get-a-single-pull-request
+*   `$PATH/github/comments/#.json`: Comments associated to the PR as specified
+    by https://developer.github.com/v3/issues/comments/#get-a-single-comment
+
+The binary will look for GitHub credentials in the `${GITHUBTOKEN}` environment
+variable. This should generally be specified as a secret with the field name
+`githubToken` in the `PullRequestResource` definition.

cmd/pullrequest-init/github.go

@@ -30,7 +30,7 @@ type GitHubHandler struct {
 // NewGitHubHandler initializes a new handler for interacting with GitHub
 // resources.
 func NewGitHubHandler(ctx context.Context, logger *zap.SugaredLogger, rawURL string) (*GitHubHandler, error) {
-	token := strings.TrimSpace(os.Getenv("GITHUBOAUTHTOKEN"))
+	token := strings.TrimSpace(os.Getenv("GITHUBTOKEN"))
 	var hc *http.Client
 	if token != "" {
 		ts := oauth2.StaticTokenSource(