Add small doc improvements for first time users (#182)

README.md

@@ -52,3 +52,17 @@ Here are some of the things I want to accomplish for each emulated machine:
 * Audio Support
 * Display Emulation - High resolution graphics - Mostly works.
 
+## Building the emulator
+
+```
+cd src
+make
+```
+
+## Running the emulator
+
+From the command line:
+
+```
+./src/ewm two --color --drive1 disks/DOS33-SamplePrograms.dsk
+```

src/ewm.c

@@ -38,6 +38,7 @@ static void usage() {
    fprintf(stderr, "\n");
    fprintf(stderr, "If no command is specified, the 'bootloader' will be run, which\n");
    fprintf(stderr, "allows the user to interactively select what emulator to start.\n");
+   fprintf(stderr, "\nSuggestion: to get started, try 'ewm two --color --drive1 <disk file>'\n");
 }
 
 int main(int argc, char **argv) {