Update the install ReadMe

Author: mdmintz

help_docs/install.md

@@ -2,21 +2,24 @@
 
 If you're installing SeleniumBase from a cloned copy on your machine, use:
 ```
-pip install -r requirements.txt
+pip install -U -r requirements.txt
 
 python setup.py develop
 ```
 
-If you're installing SeleniumBase from the [Python Package Index](https://pypi.python.org/pypi/seleniumbase), use:
+If you're installing SeleniumBase directly [from PyPI (the Python Package Index)](https://pypi.python.org/pypi/seleniumbase), use:
 ```bash
-pip install seleniumbase
+pip install -U seleniumbase
 ```
 
-If you're installing SeleniumBase directly from GitHub, use:
+If you're installing SeleniumBase directly [from GitHub](https://github.com/seleniumbase/SeleniumBase), use:
 ```bash
-pip install -e git+https://github.com/seleniumbase/SeleniumBase.git@master#egg=seleniumbase
+pip install -U -e git+https://github.com/seleniumbase/SeleniumBase.git@master#egg=seleniumbase
 ```
 
-(If you already have an older version installed, you may want to add ``--upgrade`` to your ``pip`` command to update existing Python packages. If you're not using a virtual environment, you may need to add ``--user`` to your ``pip`` command if you're getting errors during installation.)
+If you're installing SeleniumBase directly [from Anaconda Cloud](https://anaconda.org/seleniumbase/dashboard), use:
+```bash
+pip install -U -i https://pypi.anaconda.org/seleniumbase/simple seleniumbase
+```
 
-(If you want to use Python 3.x instead of Python 2.7, use ``pip3`` in place of ``pip`` and ``python3`` in place of ``python``.)
+(If you're not using a virtual environment, you may need to add ``--user`` to your ``pip`` command if you're getting errors during installation.)