Initial commit: README, base plaintext and richtext signatures

README.md

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+# e-Durable mail signature
+
+You'll find the templates of e-Durable mail signatures in this repository.
+Properly configuring your client is your job (feel free to contribute
+procedures here - I won't if it can be helped).
+
+Please note that:
+
+	* You SHOULD send e-mails in plaintext. Plaintext has many advantages:
+		- A few reasons to use plaintext over HTML can be found
+			[here](https://useplaintext.email/#why-plaintext).
+	* You CAN - but do not have to - send e-mails in rich text (HTML).
+		- Receiver will see the fancy signature, including logo... which will be
+			heavier than the actual text.

plaintext-signature.txt

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+Note: a plain-text signature starts with the '-- ' line (including trailing space).
+
+```
+-- 
+Chauve Souris, Test User
++41 76 666 66 66
+
+e-Durable SA
+Domaine des Pins C,
+1196 Gland, Switzerland
+```

richtext-signature.html

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+<style>
+	#signature-container {
+		display: flex;
+		flex-direction: row;
+		color: #898989;
+	}
+
+	.signature-column {
+		display: flex;
+		flex-direction: column;
+		height: 75px;
+		justify-content: space-between;
+	}
+
+	#signature-column-right {
+		margin-left: 20px;
+		padding-left: 20px;
+		border-left: 1px solid #898989;
+	}
+
+	#signature-name {
+		font-weight: bold;
+		color: blue;
+	}
+</style>
+
+<div id="signature-container">
+	<div class="signature-column">
+		<img src="edurable-logo.png" alt="e-Durable logo" />
+		<div>
+		Domaine des Pins C<br />
+		1196 Gland, Switzerland
+		</div>
+	</div>
+	<div class="signature-column" id="signature-column-right">
+		<div>
+			<span id="signature-name">Chauve Souris</span>
+			<br />
+			<small>Test User</small>
+		</div>
+		<div>+41 76 666 66 66</div>
+	</div>
+</div>