Update conda installation instructions to include gpytorch channel (#271)

Summary:
Addresses installation error reported in some settings: #226

Pull Request resolved: #271

Test Plan: tested locally in anaconda docker container

Reviewed By: danielrjiang

Differential Revision: D17528793

Pulled By: Balandat

fbshipit-source-id: a1a4ed61951e203282f07033138c63ce3beefa64

Author: Balandat

README.md

@@ -60,13 +60,16 @@ Optimization simply use Ax.
 The latest release of BoTorch is easily installed either via
 [Anaconda](https://www.anaconda.com/distribution/#download-section) (recommended):
 ```bash
-conda install botorch -c pytorch
+conda install botorch -c pytorch -c gpytorch
 ```
 or via `pip`:
 ```bash
 pip install botorch
 ```
 
+You can customize your PyTorch installation (i.e. CUDA version, CPU only option)
+by following the [PyTorch installation instructions](https://pytorch.org/get-started/locally/).
+
 ***Important note for MacOS users:***
 * You will want to make sure your PyTorch build is linked against MKL (the
   non-optimized version of BoTorch can be up to an order of magnitude slower in

docs/getting_started.md

@@ -25,7 +25,7 @@ or `pip`:
 <!--DOCUSAURUS_CODE_TABS-->
 <!--conda-->
 ```bash
-conda install botorch -c pytorch
+conda install botorch -c pytorch -c gpytorch
 ```
 <!--pip-->
 ```bash

scripts/versions.js

@@ -40,7 +40,7 @@ function Versions(props) {
               <tr>
                 <td>{`stable (${latestVersion})`}</td>
                 <td>
-                  <code>conda install -c pytorch botorch</code>
+                  <code>conda install botorch -c pytorch -c gpytorch</code>
                 </td>
                 <td>
                   <a href={`${baseUrl}index.html`}>stable</a>

website/pages/en/index.js

@@ -153,7 +153,7 @@ candidate  # tensor([0.4887, 0.5063])
             <li>
               <h4>Install BoTorch:</h4>
               <a>via conda (recommended):</a>
-              <MarkdownBlock>{bash`conda install botorch -c pytorch`}</MarkdownBlock>
+              <MarkdownBlock>{bash`conda install botorch -c pytorch -c gpytorch`}</MarkdownBlock>
               <a>via pip:</a>
               <MarkdownBlock>{bash`pip install botorch`}</MarkdownBlock>
             </li>