Updated modals and README (#235)

lib/pinchflat_web/components/layouts/partials/upgrade_modal.heex

@@ -3,18 +3,20 @@
     <h3 class="text-2xl text-white">Pro Mode</h3>
     <p class="text-sm">Don't worry - Pinchflat is completely free :&rpar;</p>
     <p class="mt-4">
-      If you find the project valuable and want to support its development, a
-      <.inline_link href="https://www.paypal.me/kieraneglin">donation</.inline_link>
-      would be greatly appreciated.
+      If you find the project valuable and want to say thanks, a
+      <.inline_link href="https://supporters.eff.org/donate">
+        donation to the Electronic Frontier Foundation
+      </.inline_link>
+      would be greatly appreciated! You can optionally post proof of donation on
+      <.inline_link href="https://github.com/kieraneglin/pinchflat/issues/234">this issue</.inline_link>
+      to hopefully inspire others to donate as well.
     </p>
     <p class="mt-4">
-      Plus, $5 USD from any donation over $10 USD will be donated to
-      <.inline_link href="https://www.eff.org/">The Electronic Frontier Foundation</.inline_link>
-      who defend your online liberties and backed
+      The Electronic Frontier Foundation is a nonprofit organization who defend your online liberties and backed
       <.inline_code>youtube-dl</.inline_code>
       when Google took them down<.inline_link href="https://github.com/github/dmca/blob/9a85e0f021f7967af80e186b890776a50443f06c/2020/11/2020-11-16-RIAA-reversal-effletter.pdf">
         <.icon name="hero-arrow-top-right-on-square" class="h-3 w-3" />
-      </.inline_link>. <strong>You do not need to donate to unlock Pro</strong>. It's just a way to say thanks!
+      </.inline_link>. <strong>You do not need to donate to unlock Pro</strong>. It's just a way to show support!
     </p>
 
     <p class="mt-4">