minor fix reference-currency -> base-currency

catalyst/__main__.py

@@ -206,8 +206,8 @@ def ipython_only(option):
 )
 @click.option(
     '-c',
-    '--reference-currency',
-    help='The reference currency used to calculate statistics '
+    '--base-currency',
+    help='The base currency used to calculate statistics '
          '(e.g. usd, btc, eth).',
 )
 @click.pass_context
@@ -239,7 +239,7 @@ def run(ctx,
             ctx.fail("must specify an algorithm name '-n' in live execution "
                      "mode '--live'")
         if base_currency is None:
-            ctx.fail("must specify a reference currency '-c' in live "
+            ctx.fail("must specify a base currency '-c' in live "
                      "execution mode '--live'")
     else:
         # check that the start and end dates are passed correctly

catalyst/examples/buy_low_sell_high_live.py

@@ -1,3 +1,14 @@
+'''
+This algorithm requires an additional library (ta-lib) beyond those required by catalyst.
+Install it first by running: 
+$ pip install TA-Lib
+
+If you get build errors like "fatal error: ta-lib/ta_libc.h: No such file or directory"
+it typically means that it can't find the underlying TA-Lib library and needs to be installed.
+See https://mrjbq7.github.io/ta-lib/install.html for instructions on how to install 
+the required dependencies.
+'''
+
 import talib
 from logbook import Logger
 

docs/live-trading-wiki.md

@@ -72,7 +72,7 @@ error will occur if the specified trading pair is not trading
 on the exchange.
 
 <h2>Trading an Algorithm</h2>
-There are no special convention to follow when writing an
+There is no special convention to follow when writing an
 algorithm for live trading. The same algorithm should work in
 backtest and live execution mode without modification.
 
@@ -97,7 +97,7 @@ Here is the breakdown of the new arguments:
     (supported values: *bitfinex*, *bittrex*).
 * algo_namespace: A arbitrary label assigned to your algorithm for
     data storage purposes.
-* base_currency: The reference currency used to calculate the
+* base_currency: The base currency used to calculate the
     statistics of your algorithm. Currently, the base currency of all
     trading pairs of your algorithm must match this value.