feat: Add Accrescent banner + Update installation instructions :)

Signed-off-by: celenity <celenity@celenity.dev>

README.md

@@ -6,6 +6,9 @@
         height="200">
 </p>
 
+[<img src="assets/accrescent.png"
+    alt="Get it on Accrescent"
+    height="80">](https://accrescent.app/app/org.ironfoxoss.ironfox)
 [<img src="assets/f-droid.png"
     alt="Get it on F-Droid"
     height="80">](fdroidrepos://fdroid.ironfoxoss.org/fdroid/repo?fingerprint=C5E291B5A571F9C8CD9A9799C2C94E02EC9703948893F2CA756D67B94204F904)
@@ -25,11 +28,13 @@ We'd love to see you over on [Matrix](https://matrix.to/#/#ironfox:unredacted.or
 
 ## App Installation
 
-Currently, you can install IronFox using your F-Droid client of choice, from our [F-Droid repository](fdroidrepos://fdroid.ironfoxoss.org/fdroid/repo?fingerprint=C5E291B5A571F9C8CD9A9799C2C94E02EC9703948893F2CA756D67B94204F904), from [Obtainium](obtainium://app/%7B%22id%22%3A%22org.ironfoxoss.ironfox%22%2C%22url%22%3A%22https%3A%2F%2Fgitlab.com%2Fironfox-oss%2Fironfox%22%2C%22author%22%3A%22ironfox-oss%22%2C%22name%22%3A%22ironfox%22%2C%22preferredApkIndex%22%3A0%2C%22additionalSettings%22%3A%22%7B%5C%22fallbackToOlderReleases%5C%22%3Atrue%2C%5C%22trackOnly%5C%22%3Afalse%2C%5C%22versionExtractionRegEx%5C%22%3A%5C%22%5C%22%2C%5C%22matchGroupToUse%5C%22%3A%5C%22%5C%22%2C%5C%22versionDetection%5C%22%3Atrue%2C%5C%22releaseDateAsVersion%5C%22%3Afalse%2C%5C%22useVersionCodeAsOSVersion%5C%22%3Afalse%2C%5C%22apkFilterRegEx%5C%22%3A%5C%22%5C%22%2C%5C%22invertAPKFilter%5C%22%3Afalse%2C%5C%22autoApkFilterByArch%5C%22%3Atrue%2C%5C%22appName%5C%22%3A%5C%22IronFox%5C%22%2C%5C%22shizukuPretendToBeGooglePlay%5C%22%3Afalse%2C%5C%22allowInsecure%5C%22%3Afalse%2C%5C%22exemptFromBackgroundUpdates%5C%22%3Afalse%2C%5C%22skipUpdateNotifications%5C%22%3Afalse%2C%5C%22about%5C%22%3A%5C%22A%20privacy%20and%20security-oriented%20Firefox-based%20browser%20for%20Android.%5C%22%2C%5C%22refreshBeforeDownload%5C%22%3Afalse%7D%22%2C%22overrideSource%22%3A%22GitLab%22%7D), or directly from our [GitLab releases](https://gitlab.com/ironfox-oss/IronFox/-/releases).
+Currently, you can install IronFox from [Accrescent](https://accrescent.app/app/org.ironfoxoss.ironfox), from your preferred F-Droid client via our [F-Droid repository](fdroidrepos://fdroid.ironfoxoss.org/fdroid/repo?fingerprint=C5E291B5A571F9C8CD9A9799C2C94E02EC9703948893F2CA756D67B94204F904), from [Obtainium](obtainium://app/%7B%22id%22%3A%22org.ironfoxoss.ironfox%22%2C%22url%22%3A%22https%3A%2F%2Fgitlab.com%2Fironfox-oss%2Fironfox%22%2C%22author%22%3A%22ironfox-oss%22%2C%22name%22%3A%22ironfox%22%2C%22preferredApkIndex%22%3A0%2C%22additionalSettings%22%3A%22%7B%5C%22fallbackToOlderReleases%5C%22%3Atrue%2C%5C%22trackOnly%5C%22%3Afalse%2C%5C%22versionExtractionRegEx%5C%22%3A%5C%22%5C%22%2C%5C%22matchGroupToUse%5C%22%3A%5C%22%5C%22%2C%5C%22versionDetection%5C%22%3Atrue%2C%5C%22releaseDateAsVersion%5C%22%3Afalse%2C%5C%22useVersionCodeAsOSVersion%5C%22%3Afalse%2C%5C%22apkFilterRegEx%5C%22%3A%5C%22%5C%22%2C%5C%22invertAPKFilter%5C%22%3Afalse%2C%5C%22autoApkFilterByArch%5C%22%3Atrue%2C%5C%22appName%5C%22%3A%5C%22IronFox%5C%22%2C%5C%22shizukuPretendToBeGooglePlay%5C%22%3Afalse%2C%5C%22allowInsecure%5C%22%3Afalse%2C%5C%22exemptFromBackgroundUpdates%5C%22%3Afalse%2C%5C%22skipUpdateNotifications%5C%22%3Afalse%2C%5C%22about%5C%22%3A%5C%22A%20privacy%20and%20security-oriented%20Firefox-based%20browser%20for%20Android.%5C%22%2C%5C%22refreshBeforeDownload%5C%22%3Afalse%7D%22%2C%22overrideSource%22%3A%22GitLab%22%7D), or directly from our [GitLab releases](https://gitlab.com/ironfox-oss/IronFox/-/releases).
+
+**The most secure way to install IronFox is from [Accrescent](https://accrescent.app/) - and this is the installation method we recommend most users use.** Accrescent is a new and upcoming, free and open source Android app store - with a focus on privacy & security *(See [here](https://accrescent.app/features) for a list of some of Accrescent's key features)*. It's currently used by other privacy and security-focused projects, such as [Molly](https://molly.im/), and recommended for use by [GrapheneOS](https://grapheneos.org/), among other privacy and security-focused projects and researchers.
 
 Regardless of your installation method, we recommend verifying Ironfox's package ID and the checksum of its signing certificate. You can simplify this process using [AppVerifier](https://github.com/soupslurpr/AppVerifier), which also has easy integration with Obtainium. **See [App Verification](#app-verification) below for IronFox's Package ID & SHA-256 of the signing certificate.**
 
-If you are using F-Droid, we recommend [F-Droid Basic](https://f-droid.org/packages/org.fdroid.basic/) as your client of choice. Due to its reduced feature set, F-Droid Basic has decreased attack surface.
+If you are using F-Droid, we recommend [F-Droid Basic](https://f-droid.org/packages/org.fdroid.basic/) as your client of choice. Due to its reduced feature set, F-Droid Basic has less attack surface; meaning it is generally more secure than the standard client.
 
 It should be noted that our F-Droid repo is hosted using Cloudflare's R2 Storage *(under the EU jurisdiction)*. While not perfect, Cloudflare does have a [strong privacy track record](https://discuss.privacyguides.net/t/quad9-or-cloudflare/15744/9), and due to their high reliabity and performance, we feel this is the best option for most users.