add tokens (#582)

* add XIO

* add TRST

* add imBTC closes #547

* add GST2 closes #580

* add 0xBTC closes #499

* add USDS closes #506

* add PAXG closes #520

src/contexts/Tokens.js

@@ -28,6 +28,12 @@ const ETH = {
 
 const INITIAL_TOKENS_CONTEXT = {
   1: {
+    '0xB6eD7644C69416d67B522e20bC294A9a9B405B31': {
+      [NAME]: '0xBitcoin Token',
+      [SYMBOL]: '0xBTC',
+      [DECIMALS]: 8,
+      [EXCHANGE_ADDRESS]: '0x701564Aa6E26816147D4fa211a0779F1B774Bb9B'
+    },
     '0x737F98AC8cA59f2C68aD658E3C3d8C8963E40a4c': {
       [NAME]: 'Amon',
       [SYMBOL]: 'AMN',
@@ -172,12 +178,24 @@ const INITIAL_TOKENS_CONTEXT = {
       [DECIMALS]: 12,
       [EXCHANGE_ADDRESS]: '0x4B17685b330307C751B47f33890c8398dF4Fe407'
     },
+    '0x0000000000b3F879cb30FE243b4Dfee438691c04': {
+      [NAME]: 'Gastoken.io',
+      [SYMBOL]: 'GST2',
+      [DECIMALS]: 2,
+      [EXCHANGE_ADDRESS]: '0x929507CD3D90Ab11eC4822E9eB5A48eb3a178F19'
+    },
     '0x14094949152EDDBFcd073717200DA82fEd8dC960': {
       [NAME]: 'bZx DAI iToken ',
       [SYMBOL]: 'iDAI',
       [DECIMALS]: 18,
       [EXCHANGE_ADDRESS]: '0x81eeD7F1EcbD7FA9978fcc7584296Fb0C215Dc5C'
     },
+    '0x3212b29E33587A00FB1C83346f5dBFA69A458923': {
+      [NAME]: 'The Tokenized Bitcoin',
+      [SYMBOL]: 'imBTC',
+      [DECIMALS]: 8,
+      [EXCHANGE_ADDRESS]: '0xFFcf45b540e6C9F094Ae656D2e34aD11cdfdb187'
+    },
     '0x6fB3e0A217407EFFf7Ca062D46c26E5d60a14d69': {
       [NAME]: 'IoTeX Network',
       [SYMBOL]: 'IOTX',
@@ -310,6 +328,12 @@ const INITIAL_TOKENS_CONTEXT = {
       [DECIMALS]: 18,
       [EXCHANGE_ADDRESS]: '0xC040d51b07Aea5d94a89Bc21E8078B77366Fc6C7'
     },
+    '0x45804880De22913dAFE09f4980848ECE6EcbAf78': {
+      [NAME]: 'Paxos Gold',
+      [SYMBOL]: 'PAXG',
+      [DECIMALS]: 18,
+      [EXCHANGE_ADDRESS]: '0x0d2E1a84638bD1B6c0C260c758c39451D4587be1'
+    },
     '0x93ED3FBe21207Ec2E8f2d3c3de6e058Cb73Bc04d': {
       [NAME]: 'Pinakion',
       [SYMBOL]: 'PNK',
@@ -466,6 +490,12 @@ const INITIAL_TOKENS_CONTEXT = {
       [DECIMALS]: 8,
       [EXCHANGE_ADDRESS]: '0xb6cFBf322db47D39331E306005DC7E5e6549942B'
     },
+    '0xCb94be6f13A1182E4A4B6140cb7bf2025d28e41B': {
+      [NAME]: 'Trustcoin',
+      [SYMBOL]: 'TRST',
+      [DECIMALS]: 6,
+      [EXCHANGE_ADDRESS]: '0x95E4649F5209dD292cAF1F087b8F1Db3bE24927f'
+    },
     '0x2C537E5624e4af88A7ae4060C022609376C8D0EB': {
       [NAME]: 'BiLira',
       [SYMBOL]: 'TRYB',
@@ -490,6 +520,12 @@ const INITIAL_TOKENS_CONTEXT = {
       [DECIMALS]: 6,
       [EXCHANGE_ADDRESS]: '0x97deC872013f6B5fB443861090ad931542878126'
     },
+    '0xA4Bdb11dc0a2bEC88d24A3aa1E6Bb17201112eBe': {
+      [NAME]: 'StableUSD',
+      [SYMBOL]: 'USDS',
+      [DECIMALS]: 6,
+      [EXCHANGE_ADDRESS]: '0x7Ef7191AB91dDB4D7cC347fbFA170355acbaf02D'
+    },
     '0x8f3470A7388c05eE4e7AF3d01D8C722b0FF52374': {
       [NAME]: 'Veritaseum',
       [SYMBOL]: 'VERI',
@@ -520,6 +556,12 @@ const INITIAL_TOKENS_CONTEXT = {
       [DECIMALS]: 18,
       [EXCHANGE_ADDRESS]: '0x8dE0d002DC83478f479dC31F76cB0a8aa7CcEa17'
     },
+    '0x0f7F961648aE6Db43C75663aC7E5414Eb79b5704': {
+      [NAME]: 'XIO Network',
+      [SYMBOL]: 'XIO',
+      [DECIMALS]: 18,
+      [EXCHANGE_ADDRESS]: '0x7B6E5278a14d5318571d65aceD036d09c998C707'
+    },
     '0xE41d2489571d322189246DaFA5ebDe1F4699F498': {
       [NAME]: '0x Protocol Token',
       [SYMBOL]: 'ZRX',