Read This Contract (RTC) ecosystem assets (#3952)

* Include token icon for Payship.org (PSHP)

* Fixed checksum format

* Remove incorrect hash dir

* Read This Contract (RTC) ecosystem assets for RTC, Liquid Lottery (LIQLO) and SwapShip (SWSH) tokens.

* Token info files

blockchains/ethereum/assets/0x3ac2AB91dDF57e2385089202Ca221C360CED0062/info.json

@@ -0,0 +1,6 @@
+{
+    "name": "SwapShip RTC",
+    "website": "https://swapship.finance",
+    "short_description": "Rewards token received for staking liquidity within the SwapShip protocol. Read This Contract (RTC).",
+    "explorer": "https://etherscan.io/token/0x3ac2ab91ddf57e2385089202ca221c360ced0062"
+}

blockchains/ethereum/assets/0x59AD6061A0be82155E7aCcE9F0C37Bf59F9c1e3C/info.json

@@ -0,0 +1,6 @@
+{
+    "name": "Liquid Lottery RTC",
+    "website": "https://etherscan.io/address/0x59AD6061A0be82155E7aCcE9F0C37Bf59F9c1e3C#code",
+    "short_description": "Utility token used as the main prize in the daily Liquid Lottery draws. Read This Contract (RTC)",
+    "explorer": "https://etherscan.io/token/0x59AD6061A0be82155E7aCcE9F0C37Bf59F9c1e3C"
+}

blockchains/ethereum/assets/0x7f9A00E03c2E53A3aF6031C17A150DBeDaAab3dC/info.json

@@ -0,0 +1,6 @@
+{
+    "name": "Read This Contract",
+    "website": "https://etherscan.io/address/0x7f9A00E03c2E53A3aF6031C17A150DBeDaAab3dC#code",
+    "short_description": "Utility token promoting the Read This Contract (RTC) initiative and ecosystem.",
+    "explorer": "https://etherscan.io/token/0x7f9A00E03c2E53A3aF6031C17A150DBeDaAab3dC"
+}