Split docs by sections

docs/FAQ.md

@@ -0,0 +1,20 @@
+# Mongoose Web Server Common Problems
+
+- PHP doesn't work - getting empty page, or 'File not found' error. The
+  reason for that is wrong paths to the interpreter. Remember that with PHP,
+  correct interpreter is `php-cgi.exe` (`php-cgi` on UNIX). Solution: specify
+  full path to the PHP interpreter, e.g.:
+    `mongoose -cgi_interpreter /full/path/to/php-cgi`
+
+- Mongoose fails to start. If Mongoose exits immediately when run, this
+  usually indicates a syntax error in the configuration file
+  (named `mongoose.conf` by default) or the command-line arguments.
+  Syntax checking is omitted from Mongoose to keep its size low. However,
+  the Manual should be of help. Note: the syntax changes from time to time,
+  so updating the config file might be necessary after executable update.
+
+- Embedding with OpenSSL on Windows might fail because of calling convention.
+  To force Mongoose to use `__stdcall` convention, add `/Gz` compilation
+  flag in Visual Studio compiler.
+
+