Update docs to state that Luacheck supports Lua 5.4 (#42)

README.md

@@ -21,7 +21,7 @@
 
 Luacheck is a static analyzer and a linter for [Lua](http://www.lua.org). Luacheck detects various issues such as usage of undefined global variables, unused variables and values, accessing uninitialized variables, unreachable code and more. Most aspects of checking are configurable: there are options for defining custom project-related globals, for selecting set of standard globals (version of Lua standard library), for filtering warnings by type and name of related variable, etc. The options can be used on the command line, put into a config or directly into checked files as Lua comments.
 
-Luacheck supports checking Lua files using syntax of Lua 5.1, Lua 5.2, Lua 5.3 and LuaJIT. Luacheck itself is written in Lua and runs on all of mentioned Lua versions.
+Luacheck supports checking Lua files using syntax of Lua 5.1 - 5.4, and LuaJIT. Luacheck itself is written in Lua and runs on all of mentioned Lua versions.
 
 ## Installation
 

docsrc/cli.rst

@@ -70,8 +70,8 @@ Option                                  Meaning
 ``--no-self``                           Filter out warnings related to implicit ``self`` argument.
 ``--std <std>``                         Set standard globals, default is ``max``. ``<std>`` can be one of:
 
-                                        * ``max`` - union of globals of Lua 5.1, Lua 5.2, Lua 5.3 and LuaJIT 2.x;
-                                        * ``min`` - intersection of globals of Lua 5.1, Lua 5.2, Lua 5.3 and LuaJIT 2.x;
+                                        * ``max`` - union of globals of Lua 5.1 - 5.4 and LuaJIT 2.x;
+                                        * ``min`` - intersection of globals of Lua 5.1 - 5.4 and LuaJIT 2.x;
                                         * ``lua51`` - globals of Lua 5.1 without deprecated ones;
                                         * ``lua51c`` - globals of Lua 5.1;
                                         * ``lua52`` - globals of Lua 5.2;