Update Getting Started page (#300)

docs/getting_started.rst

@@ -7,34 +7,30 @@ Getting started
 Installation
 ============
 
-Qiskit Finance depends on the main Qiskit package which has its own
+Qiskit Finance depends on Qiskit, which has its own
 `Qiskit Getting Started <https://qiskit.org/documentation/getting_started.html>`__ detailing the
-installation options for Qiskit and its supported environments/platforms. You should refer to
+installation options and its supported environments/platforms. You should refer to
 that first. Then the information here can be followed which focuses on the additional installation
 specific to Qiskit Finance.
 
 .. tab-set::
 
     .. tab-item:: Start locally
 
-        The simplest way to get started is to follow the `getting started 'Start locally' guide for
+        The simplest way to get started is to first follow the `getting started 'Start locally' guide for
         Qiskit <https://qiskit.org/documentation/getting_started.html>`__
 
-        In your virtual environment where you installed Qiskit simply add ``finance`` to the
-        extra list in a similar manner to how the extra ``visualization`` support is installed for
-        Qiskit, i.e:
+        In your virtual environment, where you installed Qiskit, install Qiskit Finance as follows:
 
         .. code:: sh
 
-            pip install qiskit[finance]
+            pip install qiskit-finance
 
-        It is worth pointing out that if you're a zsh user (which is the default shell on newer
-        versions of macOS), you'll need to put ``qiskit[finance]`` in quotes:
-
-        .. code:: sh
-
-            pip install 'qiskit[finance]'
+        .. note::
 
+            As Qiskit Finance depends on Qiskit, you can though simply install it into your
+            environment, as above, and pip will automatically install a compatible version of Qiskit
+            if one is not already installed.
 
     .. tab-item:: Install from source