changed my code style to be more in line with eminence's (and PEP 7), added GPL notice

src/main.c

@@ -1,18 +1,35 @@
+/* 
+ * This file is part of the Minecraft Overviewer.
+ *
+ * Minecraft Overviewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Minecraft Overviewer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "overviewer.h"
 
 #include <numpy/arrayobject.h>
 
 static PyMethodDef COverviewerMethods[] = {
-	{"alpha_over", alpha_over_wrap, METH_VARARGS,
-        "alpha over composite function"},
+    {"alpha_over", alpha_over_wrap, METH_VARARGS,
+     "alpha over composite function"},
     {"render_loop", chunk_render, METH_VARARGS,
-        "Renders stuffs"},
-    {NULL, NULL, 0, NULL}        /* Sentinel */
+     "Renders stuffs"},
+    {NULL, NULL, 0, NULL}       /* Sentinel */
 };
 
 PyMODINIT_FUNC
 initc_overviewer(void)
 {
-        (void) Py_InitModule("c_overviewer", COverviewerMethods);
-        import_array();  // for numpy
+    (void)Py_InitModule("c_overviewer", COverviewerMethods);
+    import_array();     // for numpy
 }