Merge pull request #3935 from NativeScript/fix-postinstall-script

Having two plugins with Podfiles and a postinstall script fails with tns 5.x

Author: rosen-vladimirov

lib/services/cocoapods-service.ts

@@ -89,6 +89,9 @@ export class CocoaPodsService implements ICocoaPodsService {
 			if (index !== -1) {
 				finalPodfileContent = finalPodfileContent.replace(postInstallHookStart, `${postInstallHookStart}${postInstallHookContent}`);
 			} else {
+				if (finalPodfileContent.length > 0) {
+					finalPodfileContent += `${EOL}${EOL}`;
+				}
 				const postInstallHook = `${postInstallHookStart}${postInstallHookContent}end`;
 				finalPodfileContent = `${finalPodfileContent}${postInstallHook}`;
 			}