updated readme

README.md

@@ -1,6 +1,31 @@
 # iexec
-
-
 Run a command with fixed intervals until you want to stop
 
-run `iexec -h` for usage.
+run `$ iexec -h` for usage.
+
+```shell
+Options:
+  -V, --version                  output the version number
+  -c, --command <command>        Command to execute wrapped in (default: null)
+  -a, --arg [arg]                Arguments for the command (default: [])
+  -i, --interval [milliseconds]  Interval milliseconds (default: 1000)
+  -w, --wait                     Wait until execution ends before running a new process (default: false)
+  -h, --help                     output usage information
+```
+
+example:
+`$ iexec -c command -a arg1 -a arg2`
+will run this command every second:
+`$ command arg1 arg2`
+
+
+## Install
+Clone the repo.
+run these commands:
+
+```shell
+$ npm install #OR yarn install
+$ npm link
+```
+
+Now you can use the `iexec` command everywhere