Include dependencies by requirements.txt (#10)

README.md

@@ -6,12 +6,9 @@ reading Microsoft Outlook .msg files and converting
 them to .eml format, which is the standard MIME
 format for email messages.
 
-The module requires Python 3.6 and the [compoundfiles](https://pypi.python.org/pypi/compoundfiles)
-package, so first install that:
+Install the dependencies with:
 
-	pip3.6 install compoundfiles
-
-We also rely on our Python 3 port of [compressed_rtf](https://github.com/delimitry/compressed_rtf), which is included in this repository.
+    pip3.6 install -r requirements.txt
 
 Then either convert a single file by piping:
 
@@ -23,3 +20,10 @@ Or convert a set of files:
 
 When passing filenames as command-line arguments, a new file with `.eml`
 appended to the filename is written out with the message in MIME format.
+
+To use it in your application
+
+    import outlookmsgfile
+    eml = outlookmsgfile.load('my_email_sample.msg')
+    
+The ``load()`` function returns an [EmailMessage](https://docs.python.org/3/library/email.message.html#email.message.EmailMessage) instance.