Renamed Util to API

Added SOM classes for English & Metric
Use WP HTTP API for requests

lib/SOMMetric.class.php

@@ -0,0 +1,46 @@
+<?php
+
+class WPStrava_SOMMetric extends WPStrava_SOM
+	/**
+	 * @param $m meters
+	 * @return string km
+	 */
+	public function distance( $m ) {
+		return number_format( $m / 1000, 2 );
+	}
+
+	/**
+	 * @param string $dist km
+	 * @return string meters
+	 */
+	public function distance_inverse( $dist ) {
+		return number_format( $dist * 1000, 2 );
+	}
+
+	public function get_distance_label() {
+		return __( 'km', 'wp-strava' );
+	}
+
+	/**
+	 * @param $mps
+	 * @return string km/h
+	 */
+	public function speed( $mps ) {
+		return number_format( $mps * 3.6, 2 );
+	}
+
+	public function get_speed_label() {
+		return __( 'km/h', 'wp-strava' );
+	}
+
+	/**
+	 * @param $m meters
+	 * @return string meters
+	 */
+	public function elevation( $m ) {
+		return number_format( $m, 2 );
+	}
+
+	public function get_elevation_label() {
+		return __( 'meters', 'wp-strava' );
+	}