Update wifimanager to 0.14 (#252)

lib/WiFiManager/WiFiManager.h

@@ -5,7 +5,7 @@
    inspired by:
    http://www.esp8266.com/viewtopic.php?f=29&t=2520
    https://github.com/chriscook8/esp-arduino-apboot
-   https://github.com/esp8266/Arduino/tree/esp8266/hardware/esp8266com/esp8266/libraries/DNSServer/examples/CaptivePortalAdvanced
+   https://github.com/esp8266/Arduino/tree/master/libraries/DNSServer/examples/CaptivePortalAdvanced
    Built by AlexT https://github.com/tzapu
    Licensed under MIT license
  **************************************************************/
@@ -29,19 +29,26 @@ const char HTTP_HEAD_END[] PROGMEM        = "</head><body><div style='text-align
 const char HTTP_PORTAL_OPTIONS[] PROGMEM  = "<form action=\"/wifi\" method=\"get\"><button>Configure WiFi</button></form><br/><form action=\"/0wifi\" method=\"get\"><button>Configure WiFi (No Scan)</button></form><br/><form action=\"/i\" method=\"get\"><button>Info</button></form><br/><form action=\"/r\" method=\"post\"><button>Reset</button></form>";
 const char HTTP_ITEM[] PROGMEM            = "<div><a href='#p' onclick='c(this)'>{v}</a>&nbsp;<span class='q {i}'>{r}%</span></div>";
 const char HTTP_FORM_START[] PROGMEM      = "<form method='get' action='wifisave'><input id='s' name='s' length=32 placeholder='SSID'><br/><input id='p' name='p' length=64 type='password' placeholder='password'><br/>";
-const char HTTP_FORM_PARAM[] PROGMEM      = "<br/><input id='{i}' name='{n}' length={l} placeholder='{p}' value='{v}' {c}>";
+const char HTTP_FORM_PARAM[] PROGMEM      = "<br/><input id='{i}' name='{n}' maxlength={l} placeholder='{p}' value='{v}' {c}>";
 const char HTTP_FORM_END[] PROGMEM        = "<br/><button type='submit'>save</button></form>";
 const char HTTP_SCAN_LINK[] PROGMEM       = "<br/><div class=\"c\"><a href=\"/wifi\">Scan</a></div>";
 const char HTTP_SAVED[] PROGMEM           = "<div>Credentials Saved<br />Trying to connect ESP to network.<br />If it fails reconnect to AP to try again</div>";
 const char HTTP_END[] PROGMEM             = "</div></body></html>";
 
+#ifndef WIFI_MANAGER_MAX_PARAMS
 #define WIFI_MANAGER_MAX_PARAMS 10
+#endif
 
 class WiFiManagerParameter {
   public:
+    /** 
+        Create custom parameters that can be added to the WiFiManager setup web page
+        @id is used for HTTP queries and must not contain spaces nor other special characters
+    */
     WiFiManagerParameter(const char *custom);
     WiFiManagerParameter(const char *id, const char *placeholder, const char *defaultValue, int length);
     WiFiManagerParameter(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom);
+    ~WiFiManagerParameter();
 
     const char *getID();
     const char *getValue();
@@ -65,11 +72,13 @@ class WiFiManager
 {
   public:
     WiFiManager();
+    ~WiFiManager();
 
     boolean       autoConnect();
     boolean       autoConnect(char const *apName, char const *apPassword = NULL);
 
     //if you want to always start the config portal, without trying to connect first
+    boolean       startConfigPortal();
     boolean       startConfigPortal(char const *apName, char const *apPassword = NULL);
 
     // get the AP name of the config portal, so it can be used in the callback
@@ -78,12 +87,12 @@ class WiFiManager
     void          resetSettings();
 
     //sets timeout before webserver loop ends and exits even if there has been no setup.
-    //usefully for devices that failed to connect at some point and got stuck in a webserver loop
+    //useful for devices that failed to connect at some point and got stuck in a webserver loop
     //in seconds setConfigPortalTimeout is a new name for setTimeout
     void          setConfigPortalTimeout(unsigned long seconds);
     void          setTimeout(unsigned long seconds);
 
-    //sets timeout for which to attempt connecting, usefull if you get a lot of failed connects
+    //sets timeout for which to attempt connecting, useful if you get a lot of failed connects
     void          setConnectTimeout(unsigned long seconds);
 
 
@@ -98,9 +107,9 @@ class WiFiManager
     void          setAPCallback( void (*func)(WiFiManager*) );
     //called when settings have been changed and connection was successful
     void          setSaveConfigCallback( void (*func)(void) );
-    //adds a custom parameter
-    void          addParameter(WiFiManagerParameter *p);
-    //if this is set, it will exit after config, even if connection is unsucessful.
+    //adds a custom parameter, returns false on failure
+    bool          addParameter(WiFiManagerParameter *p);
+    //if this is set, it will exit after config, even if connection is unsuccessful.
     void          setBreakAfterConfig(boolean shouldBreak);
     //if this is set, try WPS setup when starting (this will delay config portal for up to 2 mins)
     //TODO
@@ -159,6 +168,7 @@ class WiFiManager
     void          handleNotFound();
     void          handle204();
     boolean       captivePortal();
+    boolean       configPortalHasTimeout();
 
     // DNS server
     const byte    DNS_PORT = 53;
@@ -174,7 +184,8 @@ class WiFiManager
     void (*_apcallback)(WiFiManager*) = NULL;
     void (*_savecallback)(void) = NULL;
 
-    WiFiManagerParameter* _params[WIFI_MANAGER_MAX_PARAMS];
+    int                    _max_params;
+    WiFiManagerParameter** _params;
 
     template <typename Generic>
     void          DEBUG_WM(Generic text);