docs: Update new download method updated in README.md (#44)

Signed-off-by: AnkitKumarvaid <[email protected]>

Author: AnkitKumarvaid

README.md

@@ -14,7 +14,7 @@ A sample Employee-Manager app to test Keploy integration capabilities using [Spr
 ```shell
 curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_darwin_all.tar.gz" | tar xz -C /tmp
 
-sudo mv /tmp/keploy /usr/local/bin && keploy
+sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin && keploy
 ```
 
 ### **Linux**
@@ -25,7 +25,7 @@ sudo mv /tmp/keploy /usr/local/bin && keploy
 ```shell
 curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_linux_amd64.tar.gz" | tar xz -C /tmp
 
-sudo mv /tmp/keploy /usr/local/bin && keploy
+sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin && keploy
 ```
 
 </details>
@@ -36,7 +36,7 @@ sudo mv /tmp/keploy /usr/local/bin && keploy
 ```shell
 curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_linux_arm64.tar.gz" | tar xz -C /tmp
 
-sudo mv /tmp/keploy /usr/local/bin && keploy
+sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin && keploy
 ```