Committed to semantic versioning

as prompted by #365, #430, #447 and a thread on the google group.
- split version bumping out of generateSingleHeader script
- separate scripts for bumping each version component
- "build" number only incremented for "develop" builds

include/reporters/catch_reporter_console.hpp

@@ -261,12 +261,7 @@ namespace Catch {
             stream  << "\n" << getLineOfChars<'~'>() << "\n";
             Colour colour( Colour::SecondaryText );
             stream  << currentTestRunInfo->name
-                    << " is a Catch v"  << libraryVersion.majorVersion << "."
-                    << libraryVersion.minorVersion << " b"
-                    << libraryVersion.buildNumber;
-            if( libraryVersion.branchName != std::string( "master" ) )
-                stream << " (" << libraryVersion.branchName << ")";
-            stream  << " host application.\n"
+                    << " is a Catch v"  << libraryVersion << " host application.\n"
                     << "Run with -? for options\n\n";
 
             if( m_config->rngSeed() != 0 )