Updated versions in readme

Author: syrusakbary

README.md

@@ -1,4 +1,4 @@
-Please read [UPGRADE-v1.0.md](https://github.com/graphql-python/graphene/blob/master/UPGRADE-v1.0.md) to learn how to upgrade to Graphene `1.0`.
+Please read [UPGRADE-v2.0.md](https://github.com/graphql-python/graphene/blob/master/UPGRADE-v2.0.md) to learn how to upgrade to Graphene `2.0`.
 
 ---
 
@@ -12,7 +12,7 @@ A [Django](https://www.djangoproject.com/) integration for [Graphene](http://gra
 For instaling graphene, just run this command in your shell
 
 ```bash
-pip install "graphene-django>=1.0"
+pip install "graphene-django>=2.0.dev"
 ```
 
 ### Settings

README.rst

@@ -1,6 +1,6 @@
 Please read
-`UPGRADE-v1.0.md <https://github.com/graphql-python/graphene/blob/master/UPGRADE-v1.0.md>`__
-to learn how to upgrade to Graphene ``1.0``.
+`UPGRADE-v2.0.md <https://github.com/graphql-python/graphene/blob/master/UPGRADE-v2.0.md>`__
+to learn how to upgrade to Graphene ``2.0``.
 
 --------------
 
@@ -17,7 +17,7 @@ For instaling graphene, just run this command in your shell
 
 .. code:: bash
 
-    pip install "graphene-django>=1.0"
+    pip install "graphene-django>=2.0.dev"
 
 Settings
 ~~~~~~~~