Add README.

README.md

@@ -0,0 +1,22 @@
+# randopix
+## Usage
+```
+randopix
+
+Version 0.1 - Display random images from different sources
+
+Usage:
+  randopix [options] 
+
+Options:
+  -m, --mode=MODE            foxes, inspiro, inspiro-xmas
+  -w, --windowed             Do not start in fullscreen mode
+  -h, --help                 Show this help
+```
+## Build
+Install the [Nim Compoiler](https://nim-lang.org/install.html).
+
+Use this command to install the dependencies and build the program:
+```
+$ nimble release
+```

src/randopix.nim

@@ -19,7 +19,7 @@ var
   mode: Option[Mode]
   argParser = newParser("randopix"):
     help(fmt"Version {version} - Display random images from different sources")
-    option("-m", "--mode", help="One of these: foxes, inspiro, inspiro-xmas")
+    option("-m", "--mode", help="foxes, inspiro, inspiro-xmas")
     flag("-w", "--windowed", help="Do not start in fullscreen mode")
 
 proc downloadFox(): Pixbuf =