Add embeddings endpoint (#85) (#36)

Author: hallacy

openai/api_resources/engine.py

@@ -30,3 +30,6 @@ def generate(self, timeout=None, **params):
 
     def search(self, **params):
         return self.request("post", self.instance_url() + "/search", params)
+
+    def embeddings(self, **params):
+        return self.request("post", self.instance_url() + "/embeddings", params)