ODP Reader can't read odp file

[pei-lun]

I use Sample_12_Reader_ODPresentation.php to read my odp file and get the following result:

My PHPPresentation version is 0.5.

[Progi1984]

@Peilun0912 Could you test this pull request ?

[pei-lun]

@Progi1984 It works! But the result page doesn't show content of RichText, I'm not sure if this is the same issue or another yet.

The result page reading a pptx file the structure of which is similar to odp file can shows content of RichText:

And the result page of odp file only shows:

Thanks for help.

[Progi1984]

@Peilun0912 I corrected this. Could you test this pull request ?

[pei-lun]

@Progi1984 Tested and the page shows properties of RichText successful.