Update the help display in README

Author: zlatanvasovic

README.md

@@ -23,23 +23,28 @@ A `Python` command line client for [tldr](https://github.com/tldr-pages/tldr).
 
 ## Usage
 
-    usage: tldr [-u] [-p PLATFORM] [-s SOURCE] [-c] [-r] [-L LANGUAGE] command
-
-    Python command line client for tldr
-
-    optional arguments:
-    -h, --help            show this help message and exit
-    -v, --version         show program's version number and exit
-    -u, --update_cache    Update the local cache of pages and exit
-    -p PLATFORM, --platform PLATFORM
-                            Override the operating system [linux, osx, sunos,
-                            windows, common]
-    -s SOURCE, --source SOURCE
-                            Override the default page source
-    -c, --color           Override color stripping
-    -r, --render          Render local markdown files
-    -L LANGUAGE, --language LANGUAGE
-                            Override the default language
+```
+usage: tldr [-u] [-p PLATFORM] [-s SOURCE] [-c] [-r] [-L LANGUAGE] command
+
+Python command line client for tldr
+
+positional arguments:
+  command               command to lookup
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -v, --version         show program's version number and exit
+  -u, --update_cache    Update the local cache of pages and exit
+  -p PLATFORM, --platform PLATFORM
+                        Override the operating system [linux, osx, sunos,
+                        windows, common]
+  -s SOURCE, --source SOURCE
+                        Override the default page source
+  -c, --color           Override color stripping
+  -r, --render          Render local markdown files
+  -L LANGUAGE, --language LANGUAGE
+                        Override the default language
+```
 
 ## Configuration