Make README more directed to authors

Author: davidweichiang

.htaccess

@@ -3,6 +3,27 @@
 This directory contains the latest LaTeX and Word templates for *ACL
 conferences.
 
+## Instructions for authors
+
+Paper submissions to *ACL conferences must use the official ACL style
+templates, which are available as an [Overleaf
+template](https://www.overleaf.com/read/crtcwgxzjskr) and in this
+repository:
+
+- LaTeX style files are in the `latex` subdirectory. Please see
+  `latex/acl_latex.tex` for an example.
+- The Microsoft Word template is in `word/acl.docx`.
+
+Please follow the paper formatting guidelines general to *ACL
+conferences:
+
+- [https://acl-org.github.io/ACLPUB/formatting.html](Paper formatting guidelines)
+
+Authors may not modify these style files or use templates designed for
+other conferences.
+
+## Instructions for publications chairs
+
 To adapt them for your conference, please fork this repository and
 make necessary changes. Minimally, you'll need to update the name of
 the conference and rename the files.
@@ -17,9 +38,3 @@ page of the anonymized version. This is no longer needed, because it
 is now possible to do this stamping automatically within
 START. Currently, the way to do this is for the program chair to email
 [email protected] and request it.
-
-## Issues
-
-- Mixing of cm and in.  Do we want this to all be cm?
-- Missing example of a figure.
-- No mention of Equation formatting (Sec. 3.10 in Word doc).