Replace references to non-existent pdf file with links (#1002)

Fixes #800

ChangeLog

@@ -1232,7 +1232,7 @@ Version 1.7.3.0 'Superior Glokta':
 Version 1.7.2.0 'Superior Glokta':
 
 	- Issue 9 fixed (uclient).
-	- Secret-based authentication implemented (see TURNServerRESTAPI.pdf).
+	- Secret-based authentication implemented (see https://github.com/coturn/coturn/blob/master/README.turnserver).
 	- Uclient docs fixed.
 	- database schema extended (table for the secret added).
 

examples/scripts/restapi/secure_relay_secret.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 #
 # This is an example how to start a TURN Server in
-# secure 'static' 'secret' mode (see TURNServerRESTAPI.pdf)
+# secure 'static' 'secret' mode (see https://github.com/coturn/coturn/blob/master/README.turnserver)
 # with the long-term credentials mechanism.
 #
 # We start here a TURN Server listening on IPv4 address

examples/scripts/restapi/secure_relay_secret_with_db_mongo.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 #
 # This is an example how to start a TURN Server in
-# secure 'dynamic' 'secret' mode (see TURNServerRESTAPI.pdf)
+# secure 'dynamic' 'secret' mode (see https://github.com/coturn/coturn/blob/master/README.turnserver)
 # with MongoDB database for users information
 # with the long-term credentials mechanism.
 #

examples/scripts/restapi/secure_relay_secret_with_db_mysql.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 #
 # This is an example how to start a TURN Server in
-# secure 'dynamic' 'secret' mode (see TURNServerRESTAPI.pdf)
+# secure 'dynamic' 'secret' mode (see https://github.com/coturn/coturn/blob/master/README.turnserver)
 # with MySQL database for users information
 # with the long-term credentials mechanism.
 #

examples/scripts/restapi/secure_relay_secret_with_db_psql.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 #
 # This is an example how to start a TURN Server in
-# secure 'dynamic' 'secret' mode (see TURNServerRESTAPI.pdf)
+# secure 'dynamic' 'secret' mode (see https://github.com/coturn/coturn/blob/master/README.turnserver)
 # with PostgreSQL database for users information
 # with the long-term credentials mechanism.
 #

examples/scripts/restapi/secure_relay_secret_with_db_redis.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 #
 # This is an example how to start a TURN Server in
-# secure 'dynamic' 'secret' mode (see TURNServerRESTAPI.pdf)
+# secure 'dynamic' 'secret' mode (see https://github.com/coturn/coturn/blob/master/README.turnserver)
 # with Redis database for users information
 # with the long-term credentials mechanism.
 #

examples/scripts/restapi/secure_relay_secret_with_db_sqlite.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 #
 # This is an example how to start a TURN Server in
-# secure 'dynamic' 'secret' mode (see TURNServerRESTAPI.pdf)
+# secure 'dynamic' 'secret' mode (see https://github.com/coturn/coturn/blob/master/README.turnserver)
 # with SQLite database for users information
 # with the long-term credentials mechanism.
 #

examples/scripts/restapi/secure_udp_client_with_secret.sh

@@ -2,7 +2,7 @@
 #
 # This is an example of a script to run a "secure" TURN UDP client
 # with the long-term credentials mechanism and with
-# secret-based authorization (see TURNServerRESTAPI.pdf document).
+# secret-based authorization (see https://github.com/coturn/coturn/blob/master/README.turnserver document).
 #
 # Options:
 #

src/apps/relay/mainrelay.c

@@ -560,7 +560,8 @@ static char Usage[] = "Usage: turnserver [options]\n"
 #endif
 " --use-auth-secret				TURN REST API flag.\n"
 "						Flag that sets a special authorization option that is based upon authentication secret\n"
-"						(TURN Server REST API, see TURNServerRESTAPI.pdf). This option is used with timestamp.\n"
+"						(TURN Server REST API, see https://github.com/coturn/coturn/blob/master/README.turnserver).\n"
+"						This option is used with timestamp.\n"
 " --static-auth-secret		<secret>	'Static' authentication secret value (a string) for TURN REST API only.\n"
 "						If not set, then the turn server will try to use the 'dynamic' value\n"
 "						in turn_secret table in user database (if present).\n"