Added usage statements for C<lsb>, C<msb>, and C<unival>

lib/Type/Int.pod

@@ -71,9 +71,16 @@ Returns C<False> if this C<Int> is known not to be a prime.
 
 =head2 routine lsb
 
+Defined as:
+
     multi method lsb(Int:D:)
     multi sub    lsb(Int:D)
 
+Usage:
+
+    lsb INTEGER
+    INTEGER.lsb
+
 Returns L<Nil|/type/Nil> if the number is 0. Otherwise returns the zero-based
 index from the right of the first 1 in the binary representation of the
 number.
@@ -86,9 +93,16 @@ number.
 
 =head2 routine msb
 
+Defined as:
+
     multi method msb(Int:D:)
     multi sub    msb(Int:D)
 
+Usage:
+
+    msb INTEGER
+    INTEGER.msb
+
 Returns L<Nil|/type/Nil> if the number is 0. Otherwise returns the zero-based
 index from the left of the first 1 in the binary representation of the
 number.
@@ -101,9 +115,16 @@ number.
 
 =head2 routine unival
 
+Defined as:
+
     multi sub    unival(Int:D)  returns Numeric
     multi method unival(Int:D:) returns Numeric
 
+Usage:
+
+    unival INTEGER
+    INTEGER.unival
+
 Returns the number represented by the Unicode codepoint with the given integer
 number, or L<NaN> if it does not represent a number.