Add missing modules and fix doc

docs/beem.blockchaininstance.rst

+beem\.blockchaininstance
+========================
+
+.. automodule:: beem.blockchaininstance
+    :members:
+    :undoc-members:
+    :show-inheritance:
\ No newline at end of file

docs/beem.hive.rst

+beem\.hive
+==========
+
+.. automodule:: beem.hive
+    :members:
+    :undoc-members:
+    :show-inheritance:
\ No newline at end of file

docs/beemapi.steemnoderpc.rst → docs/beem.hivesigner.rst

-beemapi\.steemnoderpc
-=====================
+beem\.hivesigner
+================
 
-.. automodule:: beemapi.steemnoderpc
+.. automodule:: beem.hivesigner
     :members:
     :undoc-members:
     :show-inheritance:

docs/beemapi.noderpc.rst

+beemapi\.noderpc
+================
+
+.. automodule:: beemapi.noderpc
+    :members:
+    :undoc-members:
+    :show-inheritance:

docs/beemapi.websocket.rst

@@ -7,9 +7,9 @@ node.
 .. code-block:: python
 
     from pprint import pprint
-    from beemapi.websocket import SteemWebsocket
+    from beemapi.websocket import NodeWebsocket
 
-    ws = SteemWebsocket(
+    ws = NodeWebsocket(
         "wss://gtg.steem.house:8090",
         accounts=["test"],
         on_block=print,
@@ -18,7 +18,7 @@ node.
     ws.run_forever()
 
 
-.. autoclass:: beemapi.websocket.SteemWebsocket
+.. autoclass:: beemapi.websocket.NodeWebsocket
     :members:
     :undoc-members:
     :private-members:

docs/modules.rst

@@ -14,10 +14,13 @@ beem Modules
    beem.block
    beem.blockchain
    beem.blockchainobject
+   beem.blockchaininstance
    beem.comment
    beem.conveyor
    beem.discussions
    beem.exceptions
+   beem.hive
+   beem.hivesigner
    beem.imageuploader
    beem.instance
    beem.market
@@ -45,7 +48,7 @@ beemapi Modules
    beemapi.exceptions
    beemapi.graphenenerpc
    beemapi.node
-   beemapi.steemnoderpc
+   beemapi.noderpc
    beemapi.websocket
 
 beembase Modules