Added the clearCache command

editors/vim/README.md

@@ -34,5 +34,7 @@ Use the `DCD` command to send arbitary commands to the server via the client.
 The syntax is the same as with `dcd-client`, so you can use it without
 arguments to print the help message.
 
+Use `DCDclearCache` to clear the DCD server cache.
+
 When the server is running, use `CTRL`+`x` `CTRL`+`o` in a D buffer to use DCD
 completion.

editors/vim/ftplugin/d.vim

@@ -10,3 +10,4 @@ endif
 command! -buffer -nargs=? DCD execute '!'.dcomplete#DCDclient().' '.<q-args>
 command! -buffer DCDstopServer DCD --shutdown
 command! -buffer -nargs=+ -complete=dir DCDaddPath execute 'DCD '.dcomplete#globImportPath([<f-args>])
+command! -buffer DCDclearCache DCD --clearCache