Support Internet Explorer.

It claims to have WebGL 0.94.

src/Magnum/Context.cpp

@@ -404,7 +404,9 @@ Context::Context(void functionLoader()) {
         #ifndef MAGNUM_TARGET_GLES
         if(version.compare(0, 3, "2.1") == 0)
         #elif defined(MAGNUM_TARGET_WEBGL)
-        if(version.find("WebGL 1") != std::string::npos)
+        /* Internet Explorer currently has 0.94 */
+        if(version.find("WebGL 1") != std::string::npos ||
+           version.find("WebGL 0") != std::string::npos)
         #else
         if(version.find("OpenGL ES 2.0") != std::string::npos ||
            /* It is possible to use Magnum compiled for ES2 on ES3 contexts */