track sample configuration file

cmd/archive-server/config.json.SAMPLE

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+{
+	
+	/* Timezone (IANA tz format) */
+	"Timezone": "Etc/UTC",
+	
+	/* Number of lines per page */
+	"LinesPerPage": 100,
+	
+	/* A list of objects describing each independent log source */
+	"Logs": [
+				
+		/* Create one object for each independent log source */
+		{
+			/* Display name for this log source */
+			"Description": "my-log-source",
+			
+			/* Alternative URL names for this source (the first is preferred) */
+			"Slugs": [],
+			
+			/* A list of objects describing where files for this source can be found */
+			"FileLocation": [
+			
+				/* Create one object for each time-based file location */
+				{
+					
+					/*
+					 * The full path to the log file.
+					 * Date formatting reference: https://golang.org/pkg/time/#pkg-constants 
+					 */
+					"LogFilePath": "/path/to/my-log-source/2006-01.log",
+					
+					/*
+					 * The first month for which this path is valid.
+					 * Months are 1-based (1=January, 12=December)
+					 */
+					"StartMonth": {
+						"Year": 2010,
+						"Month": 2
+					},
+					
+					/*
+					 * The last month for which this is valid.
+					 * Set `"EndMonth": null` to refer to the current month.
+					 */
+					"EndMonth": {
+						"Year": 2015,
+						"Month": 7
+					}
+				}
+			]
+		}
+		
+	]
+}