Fix SDK installation error

* Add `requests` as a required dependency
* Increment SDK version to 2.0.7

Author: delias-silva

mercadopago/config/config.py

@@ -10,7 +10,7 @@ class Config():
     """
 
     def __init__(self):
-        self.__version = "2.0.6"
+        self.__version = "2.0.7"
         self.__user_agent = "MercadoPago Python SDK v" + self.__version
         self.__product_id = "bc32bpftrpp001u8nhlg"
         self.__tracking_id = "platform:" + platform.python_version()

setup.py

@@ -8,7 +8,7 @@
 
 setup(
     name="mercadopago",
-    version="2.0.6",
+    version="2.0.7",
     description="Mercadopago SDK module for Payments integration",
     author="Mercado Pago SDK",
     author_email="mp_sdk@mercadopago.com",
@@ -19,6 +19,9 @@
     include_package_data=True,
     long_description=open("README.md").read(),
     long_description_content_type="text/markdown",
+    install_requires=[
+        "requests"
+    ],
     tests_require=[
         "unittest"
     ],