README: update installation, add PyPI/conda badges

README.md

@@ -9,14 +9,28 @@
   <a href="https://docs.ligo.org/patrick.godwin/ezdag/">
     <img alt="documentation" src="https://img.shields.io/badge/docs-mkdocs%20material-blue.svg?style=flat" />
   </a>
+  <a href="https://pypi.org/project/ezdag/">
+    <img alt="pypi version" src="https://img.shields.io/pypi/v/ezdag.svg" />
+  </a>
+  <a href="https://anaconda.org/conda-forge/ezdag">
+    <img alt="conda version" src="https://img.shields.io/conda/vn/conda-forge/ezdag.svg" />
+  </a>
 </p>
 
 ---
 
 ## Installation
 
+With `pip`:
+
+```
+pip install ezdag
+```
+
+With `conda`:
+
 ```
-pip install git+https://git.ligo.org/patrick.godwin/ezdag.git
+conda install -c conda-forge ezdag
 ```
 
 ## Features