Update H3 documentation (and minor style nits.)

src/H3.h

@@ -49,9 +49,9 @@
 //     hash a substring of the data.  Hashes of substrings can be bitwise-XOR'ed
 //     together to get the same result as hashing the full string.
 // Any number of hash functions can be created by creating new instances of H3,
-//     with the same or different template parameters.  The hash function is
-//     randomly generated using bro_random(); you must call init_random_seed()
-//     before the H3 constructor if you wish to seed it.
+//     with the same or different template parameters.  The hash function
+//     constructor takes a seed as argument which defaults to a call to
+//     bro_random().
 
 
 #ifndef H3_H
@@ -62,8 +62,8 @@
 // The number of values representable by a byte.
 #define H3_BYTE_RANGE (UCHAR_MAX+1)
 
-template<class T, int N> class H3 {
-    T byte_lookup[N][H3_BYTE_RANGE];
+template <typename T, int N>
+class H3 {
 public:
 	H3(T seed = bro_random())
 		{
@@ -111,6 +111,8 @@ public:
 
 		return result;
 		}
+private:
+	T byte_lookup[N][H3_BYTE_RANGE];
 };
 
 #endif //H3_H