Release v1.0.4

Summary

This release publishes the CLI api-performance-checker to npm and adds config-file support, improved output formatting, and JSON result export.

Config file support (--config <path>) to load test options from JSON
Support for custom headers and HTTP method via --headers and --method
Output results to a JSON file with -o, --output (human readable and machine-friendly)
README updated with usage and install instructions

Fixed: Do not treat results.json as a default config file (read config only when --config provided)
Added: --method option to control HTTP method
Added: Output JSON file format and saved results when --output provided
Updated: README with badges, Quick Start, and Config examples

Global (CLI):

npm install -g api-performance-checker

Local (project):

npm install api-performance-checker --save

Run with a config file:

apitest --config ./config.json

Quick one-off:

apitest -u https://jsonplaceholder.typicode.com/posts -n 20 -c 5 -o results.json

Api_performance/ApiPerformance.js — CLI program: config handling, headers, method, JSON output
README.md — docs, badges and Quick Start
package.json — metadata and keywords