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need_instance. Indicates whether to load the module's class when displaying the "Modules" page in the back-officeback office. If set at 0, the module will not be loaded, and therefore will spend less resources to generate the "Modules" page. If your module needs to display a warning message in the "Modules" page, then you must set this attribute to 1.ps_versions_compliancy. Indicates which version of PrestaShop this module is compatible with. In the example above, we explicitly write that this module will only work with PrestaShop 1.5.x, and no other major version.bootstrap. Indicates that the module's template files have been built with PrestaShop 1.6's bootstrap tools in mind – and therefore, that PrestaShop should not try to wrap the template code for the configuration screen (if there is one) with helper tags.
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Now that all basics are in place, reload the back - office's "Modules" pages, in the "Front - office features" section, you should find your module. Install it (or reset it if it is already installed).
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