Simplified serialize and load method.
Added example.
Adapted store_to_file and load_to_file.
Fixed serialize method for stacks added vector specialization

of serialize.
Merge pull request #164 from simongog/simplify_IO

Simplified serialize and load method. Now also PODs and vector can be written and read via `store_to_file` and `read_from_file`.
Completed iterator implementation.
Merge pull request #165 from simongog/fix_int_vector_buffer_iterator

Completed iterator implementation for int_vector_buffer
Added some tests for iterators
Merge pull request #166 from simongog/fix_int_vector_buffer_iterator

Added some tests for iterators
32-bit pbump workaround ;)
Merge pull request #167 from simongog/fix_ram_filebuf

32-bit pbump workaround ;)
Use cache_file_name instead of searching it in the config file
Fixed Makefile and compile warnings
Merge pull request #168 from simongog/config_usage

Use cache_file_name instead of searching it in the config file
Merge pull request #169 from simongog/fix_lcp_benchmark

Fixed Makefile and compile warnings
Added Julio Vizcaino to README file.
Fixed link syntax.
add bit reversal method of a 64-bit word
added path() method to wavelet trees and wavelet matrix
added symbol_eg and symbol_es functions with tests