Added explanation for more fields.

sample.config.h

@@ -7,13 +7,39 @@
  * After that, simply run make command from command line.
  */
 
+/**
+ * The PATH option should point to the folder in which CodeRunner is stored.
+ */
+#define PATH "/home/shashank/git/CodeRunner/"
+
+/**
+ * Specify the username and password to be used for communication over internet with the website.
+ * The "username" and "password" fields will be supplied via POST request while querying for pending file ids, fetching source
+ * code, and sending results.
+ */
 #define USERNAME "shashank"
 #define PASSWORD "shashank"
+
+/** HTTPON and FTPON are two methods by which source code can be downloaded from internet.
+ * If the preferred method is HTTP, then specify HTTPON as true.
+ * otherwise specify FTPON as true.
+ */
 #define FTPON false
 #define HTTPON true
+
+/**
+ * If the preferred method for source code download is FTP, then specify the FTP username
+ * and password field to be user during authentication in here.
+ */
 #define FTPUSERNAME ""
 #define FTPPASSWORD ""
+
+/**
+ * Specify the FTP url for downloading source code files here.
+ */
 #define FTPADDRESS "/Upload/"
+
+
 #define URLToGetFileIds "http://192.168.208.7/return_id.php"
 #define HTTPADDRESS "http://192.168.208.7/return_sourcecode.php"
 #define FILEPATH "./Files/"
@@ -23,7 +49,3 @@
 #define LOGFILEPATH "./Logs/logs2.txt"
 #define SLEEPINTERVAL 30
 
-/**
- * The PATH option should point to the folder in which CodeRunner is stored.
- */
-#define PATH "/home/shashank/git/CodeRunner/"