Make & Doc: Add make install

Makefile

@@ -1,8 +1,23 @@
-all:
+OS=					$$(uname -o)
+
+.PHONY: depends
+depends:
+	@echo "Install Dependencies"
+	@if [ -e /etc/debian_version ]; then\
+		dpkg -s libcurl4-openssl-dev &>/dev/null || DEBIAN_FRONTEND=noninteractive apt install -y libcurl4-openssl-dev;\
+	fi
+
+build: depends
 	cc ssh-import-id.c -L/usr/local/lib -lcurl -I/usr/local/include -Wall -Wextra -Werror -o ssh-import-id
 
+install: build
+	cp ssh-import-id /usr/local/bin/
+
 debug:
 	cc -g ssh-import-id.c -L/usr/local/lib -lcurl -I/usr/local/include -Wall -Wextra -Werror -o ssh-import-id
 
 clean:
-	rm ssh-import-id ssh-import-id-gh ssh-import-id-lp
+	rm -f ssh-import-id ssh-import-id-gh ssh-import-id-lp
+
+uninstall: clean
+	rm /usr/local/bin/ssh-import-id

README.md

@@ -1,11 +1,25 @@
 # ssh-import-id
+
 ssh-import-id written in C language
 
+## Installation
+
+### GitHub
+
+To get started with the project, follow these steps:
+
+```sh
+git clone https://github.com/spmzt/ssh-import-id.git
+cd ssh-import-id
+make install
+```
+
 ## Contributions
 
 Any PR(s) are welcomed.
 
 ## TODO
+
 - ~~add -u flag for useragent~~
 - ~~add launchpad provider~~
 - ~~add -t flag for truncate (overwrite current keys)~~
@@ -15,4 +29,5 @@ Any PR(s) are welcomed.
 - add capability to understand x_ratelimit_remaining header for github
 
 ## Known Issues
+
 - Currently, User-Agent option is only supported 16 characters which is too short for most real User-Agents.