add readme & makefile + small typo fixes.

README.md

@@ -0,0 +1,26 @@
+# pomo - a simple pomodoro timer
+
+## about
+
+pomo is a simple timer that uses the pomodoro technique. It is based on [spt](https://github.com/pickfire/spt), which is a bit less simple. 
+
+## dependencies
+
+Instead of inotify, this pomodoro timer uses [sent](https://tools.suckless.org/sent/), displaying messages to the user by spawning a process that calls `echo 'msg' | sent`.
+
+## installation
+
+Read pomo.c, then:
+
+```
+make
+sudo make install
+```
+
+## usage
+
+In a terminal, call the "pomo" command. Then, an initial message will appear in its own window. Close it and start working. By default, the timer runs by 4 pomodoro timer (25 mins) with subsequent rests in between (5 mins) followed by a long rest (15 mins) in an infinite loop.
+
+## configuration
+
+read through the <60 lines of C, and change as appropriate. If this functionality is too simple, consider looking at [spt](https://github.com/pickfire/spt) instead. 

makefile

@@ -0,0 +1,8 @@
+build: 
+	gcc pomo.c -o pomo
+
+install:
+	mv ./pomo /bin/pomo
+
+lint:
+	clang-tidy pomo.c --

pomo.c

@@ -1,6 +1,6 @@
-#include <unistd.h> // for the "sleep" & exec functions
-#include <stdio.h>  // snprintf
-#include <stdlib.h> // exit
+#include <stdio.h> 
+#include <stdlib.h>
+#include <unistd.h>
 
 #define MAX_MSG_LEN 100
 #define LEN(a)  (sizeof(a) / sizeof(a[0]))
@@ -22,37 +22,35 @@ static Timers timers[] = {
 	{      900,  "Time to take a longer rest!"   },
 };
 
-void spawn(char *argv[])
-{ 
+void spawn(char *argv[]){ 
 	if (fork() == 0) {
 		// we need to fork the process so that 
 		// when we exit the sent screen
 		// this program continues.
 		setsid();
 		execvp(argv[0], argv);
-		// printfn("spt: execvp %s\n", argv[0]);
 		perror(" failed");
 		exit(0);
 	}
 }
 
-void display_message_with_sent(char *msg){
+void display_message(char *msg){
 		char sh_command[MAX_MSG_LEN];
-		snprintf(sh_command, MAX_MSG_LEN, "echo '%s' | sent", msg); // NOLINT: We are being carefull here by considering MAX_ERROR_LENGTH explicitly.
+		snprintf(sh_command, MAX_MSG_LEN, "echo '%s' | sent", msg); // NOLINT: We are being carefull here by considering MAX_MSG_LEN explicitly.
     printf("%s", sh_command);
 		char *spawn_args[] = {
-			"/bin/bash",
+			"/bin/sh",
 			"-c",
 			sh_command,
 			NULL
 		};
-		fprintf(stderr, "%s\n", msg);
 		spawn(spawn_args);
+		// fprintf(stderr, "%s\n", msg);
 }
 
 int main(int argc, char *argv[]){
 	for(int i=0; ; i = (i+1) % LEN(timers)){
-		display_message_with_sent(timers[i].msg);
+		display_message(timers[i].msg);
 		sleep(timers[i].t);
 	}
 }