Document solutions to errors caused by 'rtp' (#142)

Author: benknoble

README.md

@@ -9,6 +9,16 @@
 All instructions can be found at
 [draculatheme.com/vim](https://draculatheme.com/vim).
 
+Note that dracula must be in your `'runtimepath'` to load properly: Version 2.0
+introduced autoload functionality for part of the plugin, which doesn't work
+without `'runtimepath'` properly set.
+
+For users of Vim 8's `|packages|` feature, it suffices to put
+    packadd! dracula
+    colorscheme dracula
+in your vimrc. For users of other plugin managers, consult your documentation
+to make sure you put dracula on the `'runtimepath'` before loading it.
+
 ## Team
 
 This theme is maintained by the following person(s) and a bunch of

doc/dracula.txt

@@ -36,12 +36,24 @@ USAGE                                                            *dracula-usage*
 
 Install it with your favorite plugin manager, and then >
     colorscheme dracula
-in your vimrc !
+in your vimrc! See also |dracula_runtimepath|.
 
 If you are an airline user, you can also do >
     let g:airline_theme='dracula'
 to have airline use Dracula.
 
+                                                           *dracula_runtimepath*
+
+Note that dracula must be in your 'runtimepath' for this command to work
+properly: Version 2.0 introduced autoload functionality for part of the
+plugin, which doesn't work without 'runtimepath' properly set.
+
+For users of Vim 8's |packages| feature, it suffices to put >
+    packadd! dracula
+    colorscheme dracula
+in your vimrc. For users of other plugin managers, consult your documentation
+to make sure you put dracula on the 'runtimepath' before loading it.
+
 ==============================================================================
 CONFIGURATION                                            *dracula-configuration*