mentioned heroku app in the manuscript

Author: lh3

README.md

@@ -7,9 +7,10 @@ curl -s 'http://bgtdemo.herokuapp.com/?a=(impact=="HIGH")&s=(population=="FIN")&
 curl -s 'http://bgtdemo.herokuapp.com/?t=CHROM,POS,END,REF,ALT,AC/AN&f=(AC>1)&r=20'
 ```
 For the last query, the last line is "*", indicating the result is incomplete.
-Note that this web app is using Heroku's free tier. It uses one CPU only and is
-put to sleep when the app is idle. Heroku also forces free app to sleep for "6
-hours in a 24 hour period". I don't know how exactly this works.
+Note that this web app is using Heroku's free tier. It is restricted to one CPU
+only and put to sleep when the app is idle. There is an overhead of wakeup.
+Heroku also forces free apps to sleep for "6 hours in a 24 hour period". I
+don't know how exactly this works.
 
 #### Run BGT locally
 ```sh

tex/bgt.tex

@@ -205,6 +205,9 @@ \section{Results}
 reads the entire file into memory to alleviate the overhead, but a better
 solution would be to set up a proper database for variant annotations.
 
+We have also set up a public BGT server at http://bgtdemo.herokuapp.com. It
+hosts 1000 Genomes data for chromosome 11 and 20.
+
 \section{Discussions}
 
 Given a multi-sample VCF, most BGT functionalities can be achieved with small
@@ -234,7 +237,7 @@ \section{Discussions}
 share-everything-under-permission model.
 
 \section*{Acknowledgement}
-I am grateful to HRC for granting the permission to use the data for evaluating
+We are grateful to HRC for granting the permission to use the data for evaluating
 the performance of BGT and thank the Global Alliance Data Working Group for the
 helpful suggestions.
 \paragraph{Funding\textcolon} NHGRI U54HG003037; NIH GM100233