Update README

README.org

@@ -4,11 +4,26 @@
 
 * Emacs version
 
-  This configuration is maintained only for the Emacs master branch version.
+  This configuration is maintained only for the Emacs master branch version. It
-  It may work on some older version or you may have to remove the features that
+  may work on some older version or you may have to remove the features that
   rely on the newer Emacs versions. Currently, this configuration uses a few
   features from Emacs 26 and 27.
 
+  To fully leverage the features used in this configuration, Emacs must be
+  compiled with the right options.
+
+** Native JSON
+
+   This configuration uses ~lsp-mode~ for some programming languages which is
+   much faster if Emacs is compiled with native JSON support. Emacs will by
+   default compile with native JSON support if the ~jansson~ library is present
+   (including headers).
+
+** Dynamic modules
+
+ ~vterm~ uses dynamic modules. In order to enable dynamic modules, Emacs must
+   be compiled with the ~--with-modules~ option (not enabled by default).
+
 * Installation
 
   Clone this repository into your home directory:
@@ -26,6 +41,12 @@
   $ sudo cp ~/.local/source-code-pro/OTF/*.otf /usr/local/share/fonts
   #+END_SRC
 
+  Once the initial setup completes, you also need to run the following in Emacs
+
+  #+BEGIN_SRC
+  M-x all-the-icons-install-fonts
+  #+END_SRC
+
 * External Support for Programming Languages
 
   This configuration relies uses ~lsp-mode~ for language-specific features.
@@ -57,6 +78,9 @@
    $ pip3 install 'python-language-server[all]'
    #+END_SRC
 
+   Note that when using Python virtual environments it is best to install the
+   language server in the environment itself.
+
 ** Rust
 
    Install RLS using ~rustup~
@@ -67,10 +91,10 @@
 
 * Package Management
 
-  This =.emacs.d= uses its own small framework for package management located
+  This =.emacs.d= uses its own small framework for package management located in
-  in the [[emodule][emodule]] directory.  Its operation is heavily inspired by [[http://spacemacs.org/][Spacemacs]],
+  the [[emodule][emodule]] directory. Its operation is heavily inspired by [[http://spacemacs.org/][Spacemacs]], but is
-  but is much smaller with fewer features and thus simpler.  For instructions,
+  much smaller with fewer features and thus simpler. For instructions, see its
-  see its own [[emodule/README.org][README file]].
+  own [[emodule/README.org][README file]].
 
 * Theme